{"id":997,"date":"2025-10-24T15:22:15","date_gmt":"2025-10-24T07:22:15","guid":{"rendered":"https:\/\/sunhyings.com\/?page_id=997"},"modified":"2026-03-31T17:37:31","modified_gmt":"2026-03-31T09:37:31","slug":"weld-neck-flanges","status":"publish","type":"page","link":"https:\/\/sunhyings.com\/it\/stainless-steel-flange\/weld-neck-flanges\/","title":{"rendered":"Flange a collarino"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"997\" class=\"elementor elementor-997\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5c096088 e-flex e-con-boxed e-con e-parent\" data-id=\"5c096088\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-173b95b8 e-con-full e-flex e-con e-child\" data-id=\"173b95b8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-313e5b7 elementor-widget elementor-widget-shortcode\" data-id=\"313e5b7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><nav aria-label=\"breadcrumbs\" class=\"rank-math-breadcrumb\"><p><span class=\"last\">Home<\/span><\/p><\/nav><\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c9119e6 elementor-widget elementor-widget-heading\" data-id=\"c9119e6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Weld Neck Flanges \u2022 High-Integrity Connections<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5dd8cd85 elementor-widget elementor-widget-heading\" data-id=\"5dd8cd85\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Stainless Steel Weld Neck Flanges Manufacturer for High-Pressure Service<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-60c6de5 elementor-widget elementor-widget-text-editor\" data-id=\"60c6de5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Forged weld neck flanges for high-pressure, thermal cycling, and vibration-sensitive piping. Available to ASME B16.5 \/ B16.47, EN 1092-1, and JIS standards with 3.1 MTR, PMI, dimensional inspection, and project-specific NDT.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b602f82 e-con-full e-flex e-con e-child\" data-id=\"b602f82\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9bbd564 elementor-widget elementor-widget-text-editor\" data-id=\"9bbd564\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>Standards<\/strong> ASME B16.5 (NPS 1\/2\u201324) \u2022 ASME B16.47 (NPS 26\u201360) \u2022 EN 1092-1 \u2022 JIS B2220<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6c29e31 elementor-widget elementor-widget-text-editor\" data-id=\"6c29e31\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><b>Classes <\/b>150 \/ 300 \/ 600 \/ 900 \/ 1500 \/ 2500<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bdc1ab0 elementor-widget elementor-widget-text-editor\" data-id=\"bdc1ab0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><b>Facing <\/b>RF \/ FF \/ RTJ<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-08f7630 elementor-widget elementor-widget-text-editor\" data-id=\"08f7630\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><b>Materials <\/b>304\/304L, 316\/316L, 2205, 2507<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-119c109 elementor-widget elementor-widget-text-editor\" data-id=\"119c109\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><b>Docs <\/b>EN 10204 3.1 MTR + Heat No. traceability<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-993273c e-con-full e-flex e-con e-child\" data-id=\"993273c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9559d16 elementor-widget elementor-widget-button\" data-id=\"9559d16\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#elementor-action%3Aaction%3Dpopup%3Aopen%26settings%3DeyJpZCI6IjEzNCIsInRvZ2dsZSI6ZmFsc2V9\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Request a Quote<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6214365 elementor-widget elementor-widget-button\" data-id=\"6214365\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/sunhyings.com\/contact-us\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Ask an Engineer<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-944eb5e elementor-widget elementor-widget-button\" data-id=\"944eb5e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#Dimensions\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Download Dimensions<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f082230 elementor-widget elementor-widget-text-editor\" data-id=\"f082230\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>* ISO 9001 quality system \u2022 EN 10204 3.1 MTR (heat-number traceability) \u2022 PMI available \u2022 Dimensional inspection records \u2022 NDT available per project specification<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7515b2c5 e-flex e-con-boxed e-con e-parent\" data-id=\"7515b2c5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-5879062 e-con-full e-flex e-con e-child\" data-id=\"5879062\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-7a70d0a e-con-full e-flex e-con e-child\" data-id=\"7a70d0a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-534e82e elementor-widget elementor-widget-heading\" data-id=\"534e82e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Types of Weld Neck Flanges We Supply<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c82d2c elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"4c82d2c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b8b295a elementor-widget elementor-widget-text-editor\" data-id=\"b8b295a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>We support standard production and drawing-based customization for mating requirements, bore schedule, facing details, and project documentation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f822a3c elementor-widget elementor-widget-n-accordion\" data-id=\"f822a3c\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:600,&quot;sizes&quot;:[]},&quot;default_state&quot;:&quot;expanded&quot;,&quot;max_items_expended&quot;:&quot;one&quot;}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-2600\" class=\"e-n-accordion-item\" open>\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"true\" aria-controls=\"e-n-accordion-item-2600\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> <div class=\"centered-link-container\">     <a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\" class=\"styled-flange-link\">                  <img decoding=\"async\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/flang.webp\" alt=\"Plate Flat Face Flanges\" width=\"50px\" height=\"50px\">                        Stainless Steel Flanges     <\/a> <\/div> <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region\" aria-labelledby=\"e-n-accordion-item-2600\" class=\"elementor-element elementor-element-6761cda e-con-full e-flex e-con e-child\" data-id=\"6761cda\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a7d208d elementor-widget elementor-widget-n-accordion\" data-id=\"a7d208d\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;default_state&quot;:&quot;expanded&quot;,&quot;max_items_expended&quot;:&quot;one&quot;,&quot;n_accordion_animation_duration&quot;:{&quot;unit&quot;:&quot;ms&quot;,&quot;size&quot;:400,&quot;sizes&quot;:[]}}\" data-widget_type=\"nested-accordion.default\">\n\t\t\t\t\t\t\t<div class=\"e-n-accordion\" aria-label=\"Accordion. Open links with Enter or Space, close with Escape, and navigate with Arrow Keys\">\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1750\" class=\"e-n-accordion-item\" open>\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"1\" tabindex=\"0\" aria-expanded=\"true\" aria-controls=\"e-n-accordion-item-1750\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> By Design Type <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region region\" aria-labelledby=\"e-n-accordion-item-2600 e-n-accordion-item-1750\" class=\"elementor-element elementor-element-03d74e8 e-con-full e-flex e-con e-child\" data-id=\"03d74e8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d1a4b6e elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"d1a4b6e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">All Stainless Steel Flange<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/weld-neck-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u200b\u200bWeld Neck Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/slip-on-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u200b\u200bSlip-On Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/blind-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Blind Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/socket-weld-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Socket Weld Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/threaded-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Threaded Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/lap-joint-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Lap Joint Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/plate-flat-face-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">\u200b\u200bPlate Flat Face Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/custom-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Custom Flange\u200bs<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1751\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"2\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1751\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> By Standard &amp; Class <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region region\" aria-labelledby=\"e-n-accordion-item-2600 e-n-accordion-item-1751\" class=\"elementor-element elementor-element-1515a38 e-con-full e-flex e-con e-child\" data-id=\"1515a38\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4094dd0 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"4094dd0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/standards\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">All Standard<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/standards\/asme-b16-5\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">ASME \/ ANSI B16.5<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/standards\/asme-b16-47\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">ASME B16.47 Series A\/B<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/standards\/api-6a\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">High Pressure (API 6A)<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/standards\/en-din\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">EN 1092-1 \/ DIN<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/standards\/jis-b2220\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">JIS B2220<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1752\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"3\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1752\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Advanced Materials <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region region\" aria-labelledby=\"e-n-accordion-item-2600 e-n-accordion-item-1752\" class=\"elementor-element elementor-element-00a342a e-con-full e-flex e-con e-child\" data-id=\"00a342a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ef5a055 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"ef5a055\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/materials\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">All Materials<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/materials\/stainless-steel-304-316\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">304\/304L &amp; 316\/316L<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/materials\/duplex-steel-2205\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Duplex Steel 2205<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/materials\/super-duplex-2507\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Super Duplex 2507<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/materials\/nickel-alloys-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Nickel Alloys<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/materials\/titanium-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Titanium Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/materials\/super-austenitic-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Super Austenitic<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t<details id=\"e-n-accordion-item-1753\" class=\"e-n-accordion-item\" >\n\t\t\t\t<summary class=\"e-n-accordion-item-title\" data-accordion-index=\"4\" tabindex=\"-1\" aria-expanded=\"false\" aria-controls=\"e-n-accordion-item-1753\" >\n\t\t\t\t\t<span class='e-n-accordion-item-title-header'><div class=\"e-n-accordion-item-title-text\"> Specialty &amp; Engineering <\/div><\/span>\n\t\t\t\t\t\t\t<span class='e-n-accordion-item-title-icon'>\n\t\t\t<span class='e-opened' ><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-minus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h384c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t\t<span class='e-closed'><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-plus\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 208H272V64c0-17.67-14.33-32-32-32h-32c-17.67 0-32 14.33-32 32v144H32c-17.67 0-32 14.33-32 32v32c0 17.67 14.33 32 32 32h144v144c0 17.67 14.33 32 32 32h32c17.67 0 32-14.33 32-32V304h144c17.67 0 32-14.33 32-32v-32c0-17.67-14.33-32-32-32z\"><\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t<div role=\"region region\" aria-labelledby=\"e-n-accordion-item-2600 e-n-accordion-item-1753\" class=\"elementor-element elementor-element-d473d07 e-con-full e-flex e-con e-child\" data-id=\"d473d07\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f708a2 elementor-icon-list--layout-traditional elementor-list-item-link-full_width elementor-widget elementor-widget-icon-list\" data-id=\"2f708a2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-list.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-icon-list-items\">\n\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/specialty\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">All Specialty<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/specialty\/tube-sheet-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Tube Sheet Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/specialty\/Pressure-Vessel-Flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Pressure Vessel Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/specialty\/orifice-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Orifice Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/specialty\/anchor-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Anchor Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/specialty\/swivel-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Swivel Flanges<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/specialty\/spectacle-blinds-flanges\/\">\n\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text\">Spectacle Blinds \/ Spades<\/span>\n\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cc1bb87 elementor-widget elementor-widget-text-editor\" data-id=\"cc1bb87\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/sunhyings.com\/resources\/flange-dimensions\/\">\u27a1 Flange Dimensions Table<\/a><\/p><p><a href=\"https:\/\/sunhyings.com\/resources\/material-grades\/\">\u27a1 Material Grades Guide<\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6e0c027d e-con-full e-flex e-con e-child\" data-id=\"6e0c027d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-7d41955a e-con-full e-flex e-con e-child\" data-id=\"7d41955a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-23550872 e-grid e-con-full e-con e-child\" data-id=\"23550872\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-16a67b0a elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"16a67b0a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img fetchpriority=\"high\" decoding=\"async\" width=\"2560\" height=\"2560\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges1-scaled.webp\" class=\"attachment-full size-full wp-image-1073\" alt=\"Stainless Steel 304 Weld Neck Flange ASME B16.5 Class 150 Raised Face\" srcset=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges1-scaled.webp 2560w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges1-300x300.webp 300w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges1-1024x1024.webp 1024w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges1-150x150.webp 150w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges1-768x768.webp 768w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges1-1536x1536.webp 1536w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges1-2048x2048.webp 2048w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges1-12x12.webp 12w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">4-Bolt Stainless Steel Weld Neck Flange, Raised Face (RF)<\/h3><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1927ac32 elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"1927ac32\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img decoding=\"async\" width=\"2560\" height=\"2560\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges2-scaled.webp\" class=\"attachment-full size-full wp-image-1072\" alt=\"Weld Neck Flanges2\" srcset=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges2-scaled.webp 2560w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges2-300x300.webp 300w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges2-1024x1024.webp 1024w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges2-150x150.webp 150w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges2-768x768.webp 768w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges2-1536x1536.webp 1536w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges2-2048x2048.webp 2048w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges2-12x12.webp 12w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">4-Bolt SS304 Weld Neck Flange, ASME B16.5 Class 150 RF<\/h3><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63b32fa5 elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"63b32fa5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img decoding=\"async\" width=\"2560\" height=\"2560\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges3-scaled.webp\" class=\"attachment-full size-full wp-image-1071\" alt=\"Weld Neck Flanges3\" srcset=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges3-scaled.webp 2560w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges3-300x300.webp 300w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges3-1024x1024.webp 1024w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges3-150x150.webp 150w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges3-768x768.webp 768w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges3-1536x1536.webp 1536w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges3-2048x2048.webp 2048w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges3-12x12.webp 12w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">4-Bolt SS316L Weld Neck Flange, PN16 Raised Face (RF)<\/h3><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3700ba90 elementor-position-top elementor-widget elementor-widget-image-box\" data-id=\"3700ba90\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-box.default\">\n\t\t\t\t\t<div class=\"elementor-image-box-wrapper\"><figure class=\"elementor-image-box-img\"><img loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"2560\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges4-scaled.webp\" class=\"attachment-full size-full wp-image-1070\" alt=\"Weld Neck Flanges4\" srcset=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges4-scaled.webp 2560w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges4-300x300.webp 300w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges4-1024x1024.webp 1024w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges4-150x150.webp 150w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges4-768x768.webp 768w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges4-1536x1536.webp 1536w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges4-2048x2048.webp 2048w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flanges4-12x12.webp 12w\" sizes=\"(max-width: 2560px) 100vw, 2560px\" \/><\/figure><div class=\"elementor-image-box-content\"><h3 class=\"elementor-image-box-title\">4-Bolt Stainless Steel Weld Neck Flange, DIN Standard RF<\/h3><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8681acf e-con-full e-flex e-con e-parent\" data-id=\"8681acf\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-44b8f56 e-flex e-con-boxed e-con e-child\" data-id=\"44b8f56\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1c5607b e-con-full e-flex e-con e-child\" data-id=\"1c5607b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-04f218b elementor-widget elementor-widget-heading\" data-id=\"04f218b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">What is a Weld Neck Flange\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5b11fc8 elementor-widget elementor-widget-text-editor\" data-id=\"5b11fc8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>A weld neck flange (WN) is a forged, hubbed flange used to connect pipe ends through a butt-weld. It is commonly specified when joint integrity matters\u2014such as higher-pressure service, vibration, thermal cycling, or applications with tighter leak-rate requirements.<\/p><p>A typical sealing system includes the flange facing, gasket, and bolting. Weld neck flanges can be manufactured from stainless steel and nickel alloys (e.g., Hastelloy) and supplied to the required standard and project specification, such as ASME B16.5\/ASME B16.47, EN 1092-1 (DIN), JIS B2220, or the applicable ISO series. Always confirm the mating flange standard and bolt pattern before ordering.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-95f02b9 e-con-full e-flex e-con e-child\" data-id=\"95f02b9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-650f8f8 elementor-widget elementor-widget-heading\" data-id=\"650f8f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">When to choose it over slip-on or lap joint<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-47a7ab1 elementor-widget elementor-widget-image\" data-id=\"47a7ab1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"383\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Welding-Neck-Flange-Cross-Section-1024x490.webp\" class=\"attachment-large size-large wp-image-1975\" alt=\"Welding Neck Flange Cross Section\" srcset=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Welding-Neck-Flange-Cross-Section-1024x490.webp 1024w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Welding-Neck-Flange-Cross-Section-300x143.webp 300w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Welding-Neck-Flange-Cross-Section-768x367.webp 768w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Welding-Neck-Flange-Cross-Section-18x9.webp 18w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Welding-Neck-Flange-Cross-Section.webp 1472w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63de14a elementor-widget elementor-widget-text-editor\" data-id=\"63de14a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Choose a weld neck flange when the joint will face pressure, thermal cycling, vibration, or stricter leak control. If installation speed and lower cost matter more than cyclic integrity, another flange type may be more practical.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-0465006 e-con-full e-flex e-con e-parent\" data-id=\"0465006\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6a8587b e-flex e-con-boxed e-con e-child\" data-id=\"6a8587b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-9d045be e-con-full e-flex e-con e-child\" data-id=\"9d045be\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-9b46eb9 e-con-full e-flex e-con e-child\" data-id=\"9b46eb9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-63cea26 elementor-widget elementor-widget-heading\" data-id=\"63cea26\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">When WN is a smart default\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5408e75 elementor-widget elementor-widget-text-editor\" data-id=\"5408e75\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><b>High vibration<\/b>\u00a0(compressor discharge, rotating equipment lines)<\/li><li><b>Thermal cycling<\/b>\u00a0(steam, hot oil, frequent start\/stop)<\/li><li><b>Higher class joints<\/b>\u00a0where bolt load and flange stiffness matter<\/li><li><b>Tight leak targets<\/b>\u00a0where joint control is part of QA<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9c7b917 e-con-full e-flex e-con e-child\" data-id=\"9c7b917\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-323214b elementor-widget elementor-widget-heading\" data-id=\"323214b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">When another flange may be better\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22140b3 elementor-widget elementor-widget-text-editor\" data-id=\"22140b3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul>\n \t<li><b>Low pressure utility<\/b>\u00a0where cost and speed dominate (often slip-on)<\/li>\n \t<li><b>Frequent dismantling<\/b>\u00a0with special constraints (depends on design)<\/li>\n \t<li><b>Space-limited fabrication<\/b>\u00a0where weld access is restricted<\/li>\n<\/ul>\n<p class=\"muted\">If you share your service conditions, we can recommend a joint concept\u2014WN isn\u2019t always the answer.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-efbf988 e-flex e-con-boxed e-con e-parent\" data-id=\"efbf988\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-c02e9bc e-con-full e-flex e-con e-child\" data-id=\"c02e9bc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-deceadd e-con-full e-flex e-con e-child\" data-id=\"deceadd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-82ea7a7 elementor-widget elementor-widget-heading\" data-id=\"82ea7a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">How to Specify Weld Neck Flanges <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-67acaf2 elementor-widget elementor-widget-text-editor\" data-id=\"67acaf2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"sunhy-lead\">A clean RFQ reduces back-and-forth and prevents mismatched bore, facing, or bolt patterns. Here is the exact specification string we like to see from EPCs and maintenance teams.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-074551c e-con-full e-flex e-con e-child\" data-id=\"074551c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-5789050 e-con-full e-flex e-con e-child\" data-id=\"5789050\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dc9adbf elementor-widget elementor-widget-heading\" data-id=\"dc9adbf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Practical warning <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22dbbd5 elementor-widget elementor-widget-text-editor\" data-id=\"22dbbd5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"label\">\u00a0If your RFQ says \u201cWN flange, Class 300\u201d but doesn\u2019t specify facing and bore\/schedule, you\u2019re inviting a preventable mismatch. I\u2019ve seen good flanges rejected onsite simply because the bore or facing didn\u2019t match the mating joint plan.<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f687d94 elementor-widget elementor-widget-text-editor\" data-id=\"f687d94\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<table aria-label=\"WN flange specification guide\">\n<thead>\n<tr>\n<th>Item<\/th>\n<th>What to provide<\/th>\n<th>Why it matters<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><b>Standard<\/b><\/td>\n<td>ASME B16.5 or ASME B16.47 (Series A\/B)<\/td>\n<td>Controls bolt pattern, OD, and key dimensions<\/td>\n<\/tr>\n<tr>\n<td><b>Size<\/b><\/td>\n<td>NPS (inches) + Qty<\/td>\n<td>Determines bore and welding details<\/td>\n<\/tr>\n<tr>\n<td><b>Pressure class<\/b><\/td>\n<td>150 \/ 300 \/ 600 \/ 900 \/ 1500 \/ 2500<\/td>\n<td>Defines thickness and bolting pattern<\/td>\n<\/tr>\n<tr>\n<td><b>Facing<\/b><\/td>\n<td>RF \/ FF \/ RTJ + (ring type if RTJ)<\/td>\n<td>Sealing system compatibility<\/td>\n<\/tr>\n<tr>\n<td><b>Material<\/b><\/td>\n<td>304\/304L, 316\/316L, 2205, 2507, [others]<\/td>\n<td>Corrosion + strength + code compliance<\/td>\n<\/tr>\n<tr>\n<td><b>Bore \/ Schedule<\/b><\/td>\n<td>Pipe schedule or required bore (match pipe OD\/ID requirements)<\/td>\n<td>Prevents mismatch during fit-up<\/td>\n<\/tr>\n<tr>\n<td><b>Inspection &amp; docs<\/b><\/td>\n<td>EN 10204 3.1 MTR, PMI, dimensional report, [NDT if required]<\/td>\n<td>QA acceptance + traceability<\/td>\n<\/tr>\n<tr>\n<td><b>Special notes<\/b><\/td>\n<td>Coating, marking, packing, export docs, project spec references<\/td>\n<td>Reduces site delays and rework<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-abfc774 e-con-full e-flex e-con e-parent\" data-id=\"abfc774\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-8cfbd9c e-flex e-con-boxed e-con e-child\" data-id=\"8cfbd9c\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-a15cdb0 e-con-full e-flex e-con e-child\" data-id=\"a15cdb0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e426899 elementor-widget elementor-widget-heading\" data-id=\"e426899\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Engineering Tools <\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-679edc4 e-con-full e-flex e-con e-child\" data-id=\"679edc4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-d53bfaa e-con-full e-flex e-con e-child\" data-id=\"d53bfaa\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-482be1f elementor-widget elementor-widget-heading\" data-id=\"482be1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Dimensions &amp; Bolt Patterns\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4602a9b elementor-widget elementor-widget-text-editor\" data-id=\"4602a9b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"muted\">Download PDF\/Excel for Class 150\u20132500 and large diameter (B16.47).<\/p><ul><li><a href=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/12\/SUNHY_ASME_B16.5_Flange_Dimensions_Full_Catalog_PDF_ONEPAGE_20251218104514.pdf\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">ASME B16.5 WN Dimensions (PDF)<\/span><\/a><\/li><li><a href=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/12\/SUNHY_ASME_B16.5_Flange_Dimensions_Full_Catalog_PDF_ONEPAGE.xlsx\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">ASME B16.5 WN Dimensions (Excel)<\/span><\/a><\/li><li><a href=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/12\/SUNHY_Large_Diameter_Flange_Guide_B16.47-1.pdf\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">ASME B16.47 Series A\/B (PDF)<\/span><\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f2a3a9f e-con-full e-flex e-con e-child\" data-id=\"f2a3a9f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3999bd1 elementor-widget elementor-widget-text-editor\" data-id=\"3999bd1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>NPS 1\/2&#8243;\u201324&#8243; (B16.5)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-66fd9b5 elementor-widget elementor-widget-text-editor\" data-id=\"66fd9b5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>26-60&#8243;+ (B16.47)<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-de378d0 elementor-widget elementor-widget-text-editor\" data-id=\"de378d0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>RF \/ FF \/ RTJ<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7c8c978 e-con-full e-flex e-con e-child\" data-id=\"7c8c978\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9e1c727 elementor-widget elementor-widget-heading\" data-id=\"9e1c727\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Facing &amp; Gasket Selection Guide<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-52a7996 elementor-widget elementor-widget-text-editor\" data-id=\"52a7996\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"muted\">Stop leaks by matching facing, gasket type, and service.<\/p><ul><li><a href=\"https:\/\/sunhyings.com\/blog\/rf-vs-ff-vs-rtj-flanges-selection-guide-key-differences\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">Solution: RF vs FF vs RTJ selection<\/span><\/a><\/li><li><a href=\"https:\/\/sunhyings.com\/blog\/flange-gasket-selection-guide-material-service-compatibility\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">Solution: gasket choice by service<\/span><\/a><\/li><li><a href=\"https:\/\/sunhyings.com\/blog\/mastering-flange-ra-zero-leakage-high-pressure-systems\/\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">Solution: flange finish (Ra) &amp; sealing<\/span><\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dcbf5e2 e-con-full e-flex e-con e-child\" data-id=\"dcbf5e2\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7785ebf elementor-widget elementor-widget-heading\" data-id=\"7785ebf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Engineer note<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-35a6313 elementor-widget elementor-widget-text-editor\" data-id=\"35a6313\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>RTJ is not \u201cbetter by default\u201d\u2014it\u2019s a system choice. If the mating flange or ring spec is wrong, RTJ can fail just as badly.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-990d73b e-con-full e-flex e-con e-child\" data-id=\"990d73b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7b029da elementor-widget elementor-widget-heading\" data-id=\"7b029da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Bolting &amp; Joint Integrity Checklist\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2144cd8 elementor-widget elementor-widget-text-editor\" data-id=\"2144cd8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"muted\"><b data-path-to-node=\"18\" data-index-in-node=\"0\">Bolting &amp; Joint Integrity Checklist<\/b> A practical checklist that reduces rework and commissioning delays.<\/p><ul><li><a href=\"https:\/\/sunhyings.com\/blog\/flange-assembly-4-steps-to-zero-leakage-joint-integrity\/#Surface%20Preparation%20in%20Flange%20Assembly\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">Solution: Precision Alignment &amp; Surface Conditioning<\/span><\/a><\/li><li><a href=\"https:\/\/sunhyings.com\/blog\/flange-assembly-4-steps-to-zero-leakage-joint-integrity\/#Alignment%20Control%20for%20Flange%20Joint%20Integrity\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">Solution: Friction Management &amp; Lubrication Control<\/span><\/a><\/li><li><a href=\"https:\/\/sunhyings.com\/blog\/flange-assembly-4-steps-to-zero-leakage-joint-integrity\/#Lubrication%20Strategy%20in%20Joint%20Integrity%20Management\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">Solution: Controlled Sequencing &amp; Target Load<\/span><\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-be8e3fc e-con-full e-flex e-con e-child\" data-id=\"be8e3fc\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-38150b4 elementor-widget elementor-widget-text-editor\" data-id=\"38150b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\tAvoid uneven compression\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-623e53c elementor-widget elementor-widget-text-editor\" data-id=\"623e53c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\tReduce gasket damage\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b81ecfc elementor-widget elementor-widget-text-editor\" data-id=\"b81ecfc\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\tImprove leak-rate outcomes\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-302f684 e-flex e-con-boxed e-con e-parent\" data-id=\"302f684\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-c007662 e-con-full e-flex e-con e-child\" data-id=\"c007662\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-c63c746 e-con-full e-flex e-con e-child\" data-id=\"c63c746\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ffdcb3f elementor-widget elementor-widget-heading\" data-id=\"ffdcb3f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Weld Neck Flanges (WN) Specifications<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f913398 elementor-widget elementor-widget-text-editor\" data-id=\"f913398\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Standard Compliance &amp; Performance<\/p><p>Designed for the most critical applications, our Weld Neck flanges strictly adhere to ASME B16.5 standards covering all pressure ratings from Class 150 through Class 2500.<\/p><ul data-path-to-node=\"6\"><li><p data-path-to-node=\"6,0,0\"><b>High Integrity:<\/b> The long, tapered hub reinforces the flange and transfers stress from the flange to the pipe, making it the superior choice for high-pressure, high-temperature, and cyclic loading conditions.<\/p><\/li><li><p data-path-to-node=\"6,1,0\"><b>Inspection Ready:<\/b> The butt-weld connection allows for full radiographic (RT) or ultrasonic inspection of the joint, ensuring maximum safety reliability.<\/p><\/li><\/ul><p>Material &amp; Installation<\/p><p>Manufactured from premium Forged Steel (Carbon, Stainless, and Alloy) to ensure grain flow continuity.<\/p><ul data-path-to-node=\"8\"><li><p data-path-to-node=\"8,0,0\"><b>Flow Optimization:<\/b> The flange bore is machined to match the ID of the mating pipe, reducing turbulence and erosion at the connection point.<\/p><\/li><\/ul><p>Dimensional Reference<\/p><p>Refer to the cross-section diagram and table headers for key measurements:<\/p><ul data-path-to-node=\"10\"><li><p data-path-to-node=\"10,0,0\"><b><span class=\"math-inline\" data-math=\"O\">O<\/span> \/ <span class=\"math-inline\" data-math=\"OD\">OD<\/span>:<\/b> Outside Diameter<\/p><\/li><li><p data-path-to-node=\"10,1,0\"><b><span class=\"math-inline\" data-math=\"X\">X<\/span>:<\/b> Diameter at Base of Hub (Structural support)<\/p><\/li><li><p data-path-to-node=\"10,2,0\"><b><span class=\"math-inline\" data-math=\"Y\">Y<\/span> \/ <span class=\"math-inline\" data-math=\"H\">H<\/span>:<\/b> Length through Hub<\/p><\/li><li><p data-path-to-node=\"10,3,0\"><b><span class=\"math-inline\" data-math=\"BC\">BC<\/span>:<\/b> Bolt Circle Diameter<\/p><\/li><\/ul><p data-path-to-node=\"11\"><i>Critical Technical Note: When ordering Weld Neck flanges, you must specify the <b>Pipe Schedule<\/b> (e.g., Sch 40, Sch 80, XS). The flange ID must match the pipe ID exactly to prevent flow restriction and ensure a proper butt weld.<\/i><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cb2f052 elementor-widget elementor-widget-image\" data-id=\"cb2f052\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"696\" height=\"484\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flange-Dimensions.webp\" class=\"attachment-large size-large wp-image-2092\" alt=\"\" srcset=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flange-Dimensions.webp 696w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flange-Dimensions-300x209.webp 300w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Weld-Neck-Flange-Dimensions-18x12.webp 18w\" sizes=\"(max-width: 696px) 100vw, 696px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b72df90 e-con-full e-flex e-con e-child\" data-id=\"b72df90\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-87b7cdf elementor-widget elementor-widget-html\" data-id=\"87b7cdf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n    \/* --- Sunhyings Technical Widget Styles (Updated Visuals) --- *\/\r\n    :root {\r\n        --brand-color: #ffc107; \/* Yellow Line *\/\r\n        --brand-dark: #b38600;\r\n        --header-bg: #003366;   \/* Dark Navy Blue *\/\r\n        --header-text: #ffffff;\r\n        --header-red: #ff5252;  \/* Red for Bolt Circle *\/\r\n        --header-sub: #a3b8cc;  \/* Light Blue-Grey for sub-text *\/\r\n        --text-dark: #2c3e50;\r\n        --highlight-bg: #fffbeb;\r\n    }\r\n\r\n    .sh-container {\r\n        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text-align: center; color: #333; }\r\n    \r\n    \/* --- HEADER STYLE --- *\/\r\n    .sh-table th {\r\n        background-color: var(--header-bg);\r\n        color: var(--header-text);\r\n        font-weight: 700;\r\n        text-transform: uppercase;\r\n        border-bottom: 3px solid var(--brand-color); \/* Yellow Line *\/\r\n        border-right: 1px solid rgba(255,255,255,0.1);\r\n        vertical-align: middle;\r\n        white-space: nowrap;\r\n    }\r\n    .sh-table th span { \r\n        display: block; \r\n        font-size: 10px; \r\n        color: var(--header-sub);\r\n        font-weight: normal; \r\n        margin-top: 4px; \r\n    }\r\n    .sh-table th.th-red-highlight {\r\n        color: var(--header-red);\r\n    }\r\n    .sh-table th.th-red-highlight span {\r\n        color: rgba(255, 82, 82, 0.7);\r\n    }\r\n\r\n    \/* Body Rows *\/\r\n    .col-secondary { background-color: #f4f8fb; color: #003366; font-weight: 600; }\r\n    .col-highlight { background-color: var(--highlight-bg); font-weight: 700; color: #d32f2f; }\r\n    \r\n    .sh-table tr:nth-child(even) { background-color: #fbfbfb; }\r\n    .sh-table tr:hover { background-color: #fff9db; transition: background 0.2s; }\r\n\r\n    \/* CTA *\/\r\n    .sh-cta-block {\r\n        text-align: center;\r\n        padding: 20px;\r\n        background: #fcfcfc;\r\n        border-top: 1px solid #eee;\r\n    }\r\n    .sh-cta-btn {\r\n        display: inline-block;\r\n        background-color: var(--header-bg);\r\n        color: #fff;\r\n        padding: 10px 25px;\r\n        border-radius: 4px;\r\n        text-decoration: none;\r\n        font-weight: 600;\r\n        font-size: 14px;\r\n        transition: background 0.3s;\r\n    }\r\n    .sh-cta-btn:hover { background-color: var(--brand-dark); }\r\n\r\n    @keyframes fadeIn {\r\n        from {opacity:0; transform: translateY(5px);}\r\n        to {opacity:1; transform: translateY(0);}\r\n    }\r\n<\/style>\r\n\r\n<section class=\"sh-container\">\r\n    <div class=\"sh-header\">\r\n        <h2>Weld Neck Flange (WN) Dimensions<\/h2>\r\n        <span>Unit: Millimeters (mm)<\/span>\r\n    <\/div>\r\n\r\n    <div class=\"sh-tabs\">\r\n        <button class=\"sh-tab-btn active\" onclick=\"openTab(event, 'wn-150')\">ASME Class 150<\/button>\r\n        <button class=\"sh-tab-btn\" onclick=\"openTab(event, 'wn-300')\">ASME Class 300<\/button>\r\n        <button class=\"sh-tab-btn\" onclick=\"openTab(event, 'wn-600')\">ASME Class 600<\/button>\r\n        <button class=\"sh-tab-btn\" onclick=\"openTab(event, 'wn-high')\">Class 900 &amp; 1500 (Snapshot)<\/button>\r\n        <button class=\"sh-tab-btn\" onclick=\"openTab(event, 'wn-large')\">Large Dia (&gt;24&quot;)<\/button>\r\n    <\/div>\r\n\r\n    <!-- ASME Class 150 -->\r\n    <div id=\"wn-150\" class=\"sh-content active-content\">\r\n        <div class=\"sh-table-wrapper\">\r\n            <h3>ASME B16.5 Class 150 WN<\/h3>\r\n            <table class=\"sh-table\">\r\n                <thead>\r\n                    <tr>\r\n                        <th>NPS<br><span>(Size)<\/span><\/th>\r\n                        <th>Outside Dia (O)<br><span>(mm)<\/span><\/th>\r\n                        <th>Hub Dia (X)<br><span>(Base of Hub)<\/span><\/th>\r\n                        <th>Length (Y)<br><span>(Through Hub)<\/span><\/th>\r\n                        <th class=\"th-red-highlight\">Bolt Circle (BC)<br><span>(mm)<\/span><\/th>\r\n                        <th>Holes<br><span>(Qty)<\/span><\/th>\r\n                        <th>Bolt Size<br><span>(Inch)<\/span><\/th>\r\n                    <\/tr>\r\n                <\/thead>\r\n                <tbody>\r\n                    <tr><td>1\/2\"<\/td><td>88.9<\/td><td class=\"col-secondary\">30.2<\/td><td class=\"col-secondary\">47.8<\/td><td class=\"col-highlight\">60.5<\/td><td>4<\/td><td>1\/2\"<\/td><\/tr>\r\n                    <tr><td>3\/4\"<\/td><td>98.6<\/td><td class=\"col-secondary\">38.1<\/td><td class=\"col-secondary\">52.3<\/td><td class=\"col-highlight\">69.9<\/td><td>4<\/td><td>1\/2\"<\/td><\/tr>\r\n                    <tr><td>1\"<\/td><td>108.0<\/td><td class=\"col-secondary\">49.3<\/td><td class=\"col-secondary\">55.6<\/td><td class=\"col-highlight\">79.2<\/td><td>4<\/td><td>1\/2\"<\/td><\/tr>\r\n                    <tr><td>1-1\/2\"<\/td><td>127.0<\/td><td class=\"col-secondary\">65.0<\/td><td class=\"col-secondary\">61.9<\/td><td class=\"col-highlight\">98.6<\/td><td>4<\/td><td>1\/2\"<\/td><\/tr>\r\n                    <tr><td>2\"<\/td><td>152.4<\/td><td class=\"col-secondary\">77.7<\/td><td class=\"col-secondary\">63.5<\/td><td class=\"col-highlight\">120.7<\/td><td>4<\/td><td>5\/8\"<\/td><\/tr>\r\n                    <tr><td>3\"<\/td><td>190.5<\/td><td class=\"col-secondary\">108.0<\/td><td class=\"col-secondary\">69.9<\/td><td class=\"col-highlight\">152.4<\/td><td>4<\/td><td>5\/8\"<\/td><\/tr>\r\n                    <tr><td>4\"<\/td><td>228.6<\/td><td class=\"col-secondary\">134.9<\/td><td class=\"col-secondary\">76.2<\/td><td class=\"col-highlight\">190.5<\/td><td>8<\/td><td>5\/8\"<\/td><\/tr>\r\n                    <tr><td>6\"<\/td><td>279.4<\/td><td class=\"col-secondary\">192.0<\/td><td class=\"col-secondary\">88.9<\/td><td class=\"col-highlight\">241.3<\/td><td>8<\/td><td>3\/4\"<\/td><\/tr>\r\n                    <tr><td>8\"<\/td><td>342.9<\/td><td class=\"col-secondary\">246.1<\/td><td class=\"col-secondary\">101.6<\/td><td class=\"col-highlight\">298.5<\/td><td>8<\/td><td>3\/4\"<\/td><\/tr>\r\n                    <tr><td>10\"<\/td><td>406.4<\/td><td class=\"col-secondary\">304.8<\/td><td class=\"col-secondary\">101.6<\/td><td class=\"col-highlight\">362.0<\/td><td>12<\/td><td>7\/8\"<\/td><\/tr>\r\n                    <tr><td>12\"<\/td><td>482.6<\/td><td class=\"col-secondary\">365.3<\/td><td class=\"col-secondary\">114.3<\/td><td class=\"col-highlight\">431.8<\/td><td>12<\/td><td>7\/8\"<\/td><\/tr>\r\n                    <tr><td>16\"<\/td><td>596.9<\/td><td class=\"col-secondary\">457.2<\/td><td class=\"col-secondary\">127.0<\/td><td class=\"col-highlight\">539.8<\/td><td>16<\/td><td>1\"<\/td><\/tr>\r\n                    <tr><td>20\"<\/td><td>698.5<\/td><td class=\"col-secondary\">558.8<\/td><td class=\"col-secondary\">144.5<\/td><td class=\"col-highlight\">635.0<\/td><td>20<\/td><td>1-1\/8\"<\/td><\/tr>\r\n                    <tr><td>24\"<\/td><td>812.8<\/td><td class=\"col-secondary\">663.4<\/td><td class=\"col-secondary\">152.4<\/td><td class=\"col-highlight\">749.3<\/td><td>20<\/td><td>1-1\/4\"<\/td><\/tr>\r\n                <\/tbody>\r\n            <\/table>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- ASME Class 300 -->\r\n    <div id=\"wn-300\" class=\"sh-content\">\r\n        <div class=\"sh-table-wrapper\">\r\n            <h3>ASME B16.5 Class 300 WN<\/h3>\r\n            <table class=\"sh-table\">\r\n                <thead>\r\n                    <tr>\r\n                        <th>NPS<br><span>(Size)<\/span><\/th>\r\n                        <th>Outside Dia (O)<br><span>(mm)<\/span><\/th>\r\n                        <th>Hub Dia (X)<br><span>(Base of Hub)<\/span><\/th>\r\n                        <th>Length (Y)<br><span>(Through Hub)<\/span><\/th>\r\n                        <th class=\"th-red-highlight\">Bolt Circle (BC)<br><span>(mm)<\/span><\/th>\r\n                        <th>Holes<br><span>(Qty)<\/span><\/th>\r\n                        <th>Bolt Size<br><span>(Inch)<\/span><\/th>\r\n                    <\/tr>\r\n                <\/thead>\r\n                <tbody>\r\n                    <tr><td>1\/2\"<\/td><td>95.3<\/td><td class=\"col-secondary\">38.1<\/td><td class=\"col-secondary\">52.3<\/td><td class=\"col-highlight\">66.5<\/td><td>4<\/td><td>1\/2\"<\/td><\/tr>\r\n                    <tr><td>1\"<\/td><td>124.0<\/td><td class=\"col-secondary\">53.8<\/td><td class=\"col-secondary\">61.9<\/td><td class=\"col-highlight\">88.9<\/td><td>4<\/td><td>5\/8\"<\/td><\/tr>\r\n                    <tr><td>2\"<\/td><td>165.1<\/td><td class=\"col-secondary\">84.1<\/td><td class=\"col-secondary\">69.9<\/td><td class=\"col-highlight\">127.0<\/td><td>8<\/td><td>5\/8\"<\/td><\/tr>\r\n                    <tr><td>3\"<\/td><td>209.6<\/td><td class=\"col-secondary\">117.3<\/td><td class=\"col-secondary\">79.2<\/td><td class=\"col-highlight\">168.1<\/td><td>8<\/td><td>3\/4\"<\/td><\/tr>\r\n                    <tr><td>4\"<\/td><td>254.0<\/td><td class=\"col-secondary\">146.1<\/td><td class=\"col-secondary\">85.9<\/td><td class=\"col-highlight\">200.2<\/td><td>8<\/td><td>3\/4\"<\/td><\/tr>\r\n                    <tr><td>6\"<\/td><td>317.5<\/td><td class=\"col-secondary\">206.2<\/td><td class=\"col-secondary\">98.6<\/td><td class=\"col-highlight\">269.7<\/td><td>12<\/td><td>3\/4\"<\/td><\/tr>\r\n                    <tr><td>8\"<\/td><td>381.0<\/td><td class=\"col-secondary\">260.4<\/td><td class=\"col-secondary\">111.3<\/td><td class=\"col-highlight\">330.2<\/td><td>12<\/td><td>7\/8\"<\/td><\/tr>\r\n                    <tr><td>10\"<\/td><td>444.5<\/td><td class=\"col-secondary\">320.5<\/td><td class=\"col-secondary\">117.3<\/td><td class=\"col-highlight\">387.4<\/td><td>16<\/td><td>1\"<\/td><\/tr>\r\n                    <tr><td>12\"<\/td><td>520.7<\/td><td class=\"col-secondary\">374.7<\/td><td class=\"col-secondary\">130.0<\/td><td class=\"col-highlight\">450.9<\/td><td>16<\/td><td>1-1\/8\"<\/td><\/tr>\r\n                <\/tbody>\r\n            <\/table>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- ASME Class 600 -->\r\n    <div id=\"wn-600\" class=\"sh-content\">\r\n        <div class=\"sh-table-wrapper\">\r\n            <h3>ASME B16.5 Class 600 WN<\/h3>\r\n            <table class=\"sh-table\">\r\n                <thead>\r\n                    <tr>\r\n                        <th>NPS<br><span>(Size)<\/span><\/th>\r\n                        <th>Outside Dia (O)<br><span>(mm)<\/span><\/th>\r\n                        <th>Hub Dia (X)<br><span>(Base of Hub)<\/span><\/th>\r\n                        <th>Length (Y)<br><span>(Through Hub)<\/span><\/th>\r\n                        <th class=\"th-red-highlight\">Bolt Circle (BC)<br><span>(mm)<\/span><\/th>\r\n                        <th>Holes<br><span>(Qty)<\/span><\/th>\r\n                        <th>Bolt Size<br><span>(Inch)<\/span><\/th>\r\n                    <\/tr>\r\n                <\/thead>\r\n                <tbody>\r\n                    <tr><td>1\/2\"<\/td><td>95.3<\/td><td class=\"col-secondary\">38.1<\/td><td class=\"col-secondary\">52.3<\/td><td class=\"col-highlight\">66.5<\/td><td>4<\/td><td>1\/2\"<\/td><\/tr>\r\n                    <tr><td>1\"<\/td><td>124.0<\/td><td class=\"col-secondary\">53.8<\/td><td class=\"col-secondary\">61.9<\/td><td class=\"col-highlight\">88.9<\/td><td>4<\/td><td>5\/8\"<\/td><\/tr>\r\n                    <tr><td>2\"<\/td><td>165.1<\/td><td class=\"col-secondary\">84.1<\/td><td class=\"col-secondary\">73.2<\/td><td class=\"col-highlight\">127.0<\/td><td>8<\/td><td>5\/8\"<\/td><\/tr>\r\n                    <tr><td>4\"<\/td><td>273.1<\/td><td class=\"col-secondary\">152.4<\/td><td class=\"col-secondary\">101.6<\/td><td class=\"col-highlight\">215.9<\/td><td>8<\/td><td>7\/8\"<\/td><\/tr>\r\n                    <tr><td>6\"<\/td><td>355.6<\/td><td class=\"col-secondary\">222.3<\/td><td class=\"col-secondary\">117.3<\/td><td class=\"col-highlight\">292.1<\/td><td>12<\/td><td>1\"<\/td><\/tr>\r\n                    <tr><td>8\"<\/td><td>419.1<\/td><td class=\"col-secondary\">273.1<\/td><td class=\"col-secondary\">133.4<\/td><td class=\"col-highlight\">349.3<\/td><td>12<\/td><td>1-1\/8\"<\/td><\/tr>\r\n                    <tr><td>12\"<\/td><td>558.8<\/td><td class=\"col-secondary\">381.0<\/td><td class=\"col-secondary\">155.4<\/td><td class=\"col-highlight\">489.0<\/td><td>20<\/td><td>1-1\/4\"<\/td><\/tr>\r\n                <\/tbody>\r\n            <\/table>\r\n        <\/div>\r\n        <div class=\"sh-cta-block\">\r\n            <p style=\"font-size:13px; color:#666; margin-bottom:8px;\">\r\n                For Classes 900, 1500 and 2500, dimensions follow the same ASME B16.5 pattern with increased thickness and bolt sizes.\r\n            <\/p>\r\n            <a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/standards\/asme-b16-5\/\" class=\"sh-cta-btn\">\r\n                Check Full ASME Class 600\u20132500 Tables\r\n            <\/a>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- High Pressure Snapshot -->\r\n    <div id=\"wn-high\" class=\"sh-content\">\r\n        <div class=\"sh-table-wrapper\">\r\n            <h3>High Pressure Snapshot \u2013 Class 1500<\/h3>\r\n            <p style=\"text-align:center; font-size:13px; color:#666; margin-bottom:15px;\">\r\n                Note: For high pressure WN flanges, pipe wall thickness (schedule) and material grade must be specified in addition to flange dimensions.\r\n            <\/p>\r\n            <table class=\"sh-table\">\r\n                <thead>\r\n                    <tr>\r\n                        <th>NPS<br><span>(Size)<\/span><\/th>\r\n                        <th>Outside Dia (O)<br><span>(mm)<\/span><\/th>\r\n                        <th>Hub Dia (X)<br><span>(Base of Hub)<\/span><\/th>\r\n                        <th>Length (Y)<br><span>(Through Hub)<\/span><\/th>\r\n                        <th class=\"th-red-highlight\">Bolt Circle (BC)<br><span>(mm)<\/span><\/th>\r\n                        <th>Holes<br><span>(Qty)<\/span><\/th>\r\n                        <th>Bolt Size<br><span>(Inch)<\/span><\/th>\r\n                    <\/tr>\r\n                <\/thead>\r\n                <tbody>\r\n                    <tr><td>2\"<\/td><td>215.9<\/td><td class=\"col-secondary\">104.6<\/td><td class=\"col-secondary\">101.6<\/td><td class=\"col-highlight\">165.1<\/td><td>8<\/td><td>7\/8\"<\/td><\/tr>\r\n                    <tr><td>3\"<\/td><td>266.7<\/td><td class=\"col-secondary\">133.4<\/td><td class=\"col-secondary\">117.3<\/td><td class=\"col-highlight\">203.2<\/td><td>8<\/td><td>1-1\/8\"<\/td><\/tr>\r\n                    <tr><td>4\"<\/td><td>311.2<\/td><td class=\"col-secondary\">162.1<\/td><td class=\"col-secondary\">123.9<\/td><td class=\"col-highlight\">241.3<\/td><td>8<\/td><td>1-1\/4\"<\/td><\/tr>\r\n                    <tr><td>6\"<\/td><td>393.7<\/td><td class=\"col-secondary\">228.6<\/td><td class=\"col-secondary\">171.5<\/td><td class=\"col-highlight\">317.5<\/td><td>12<\/td><td>1-3\/8\"<\/td><\/tr>\r\n                    <tr><td>8\"<\/td><td>482.6<\/td><td class=\"col-secondary\">292.1<\/td><td class=\"col-secondary\">212.8<\/td><td class=\"col-highlight\">393.7<\/td><td>12<\/td><td>1-5\/8\"<\/td><\/tr>\r\n                <\/tbody>\r\n            <\/table>\r\n        <\/div>\r\n        <div class=\"sh-cta-block\">\r\n            <p>Need API 6A 10,000 \/ 15,000 psi wellhead flanges?<\/p>\r\n            <a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/standards\/api-6a\/\" class=\"sh-cta-btn\">View API 6A Wellhead Standards<\/a>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <!-- Large Diameter \u2013 ASME B16.47 -->\r\n    <div id=\"wn-large\" class=\"sh-content\">\r\n            <div style=\"padding: 40px 20px; text-align:center;\">\r\n                <h3 style=\"margin-bottom:15px; color:#2c3e50;\">Large Diameter Weld Neck Flanges \u2013 ASME B16.47<\/h3>\r\n                <p style=\"max-width:800px; margin:0 auto; font-size:14px; color:#555;\">\r\n                    For pipe sizes from <strong>26&quot; to 60&quot;<\/strong>, ASME B16.47 applies. \r\n                    Sunhyings manufactures both <strong>Series A<\/strong> (MSS SP-44) and <strong>Series B<\/strong> (API 605) large diameter Weld Neck flanges.\r\n                <\/p>\r\n                <div style=\"margin-top:30px;\">\r\n                    <a href=\"https:\/\/sunhyings.com\/stainless-steel-flange\/standards\/asme-b16-47\/\" class=\"sh-cta-btn\">View B16.47 Series A\/B Dimensions<\/a>\r\n                <\/div>\r\n            <\/div>\r\n    <\/div>\r\n<\/section>\r\n\r\n<script>\r\n    function openTab(evt, tabName) {\r\n        var i, content, tablinks;\r\n        content = document.getElementsByClassName(\"sh-content\");\r\n        for (i = 0; i < content.length; i++) {\r\n            content[i].style.display = \"none\";\r\n            content[i].classList.remove(\"active-content\");\r\n        }\r\n        tablinks = document.getElementsByClassName(\"sh-tab-btn\");\r\n        for (i = 0; i < tablinks.length; i++) {\r\n            tablinks[i].className = tablinks[i].className.replace(\" active\", \"\");\r\n        }\r\n        document.getElementById(tabName).style.display = \"block\";\r\n        setTimeout(() => {\r\n            document.getElementById(tabName).classList.add(\"active-content\");\r\n        }, 10);\r\n        evt.currentTarget.className += \" active\";\r\n    }\r\n<\/script>\r\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bc2cfeb e-flex e-con-boxed e-con e-parent\" data-id=\"bc2cfeb\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-ea22718 e-con-full e-flex e-con e-child\" data-id=\"ea22718\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-a3a887e e-con-full e-flex e-con e-child\" data-id=\"a3a887e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-cc90410 elementor-widget elementor-widget-heading\" data-id=\"cc90410\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Materials &amp; Service Notes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2cfe5a8 elementor-widget elementor-widget-text-editor\" data-id=\"2cfe5a8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"sunhy-lead\">Material selection is where a \u201ccatalog page\u201d becomes a decision page. Below is conservative guidance we use when helping teams avoid corrosion surprises and maintenance headaches.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-36d07b1 e-con-full e-flex e-con e-child\" data-id=\"36d07b1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-031e293 e-con-full e-flex e-con e-child\" data-id=\"031e293\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-8b03d3d e-con-full e-flex e-con e-child\" data-id=\"8b03d3d\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c572d09 elementor-widget elementor-widget-heading\" data-id=\"c572d09\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">304\/304L vs 316\/316L\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-409cbc1 elementor-widget elementor-widget-text-editor\" data-id=\"409cbc1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>304\/304L: good general purpose choice for mild corrosion and indoor\/utility service.<\/li><li>316\/316L: my default when chlorides or marine exposure are likely (still confirm limits by spec).<\/li><li>\u201cL\u201d grades: typically preferred for weldability and reduced sensitization risk.<\/li><\/ul><p>If you have temperature + chloride + stagnation together, don\u2019t guess\u2014share conditions and we\u2019ll propose a safer option.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-75f597e e-con-full e-flex e-con e-child\" data-id=\"75f597e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8aa4377 elementor-widget elementor-widget-heading\" data-id=\"8aa4377\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Duplex 2205 \/ Super Duplex 2507\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6aea232 elementor-widget elementor-widget-text-editor\" data-id=\"6aea232\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><b>2205<\/b>: higher strength and often chosen when corrosion resistance needs to step up beyond 316L.<\/li><li><b>2507<\/b>: used in more aggressive chloride environments; requires disciplined fabrication and QA control.<\/li><\/ul><p><b>Important<\/b>: welding procedure and QA matter as much as the base metal.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e654dc9 e-flex e-con-boxed e-con e-parent\" data-id=\"e654dc9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-2f38c11 e-con-full e-flex e-con e-child\" data-id=\"2f38c11\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-6ae14f4 e-con-full e-flex e-con e-child\" data-id=\"6ae14f4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0de2969 elementor-widget elementor-widget-heading\" data-id=\"0de2969\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Facing, Sealing &amp; Bolting<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bfed61b elementor-widget elementor-widget-text-editor\" data-id=\"bfed61b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"sunhy-lead\">A flange is part of a bolted joint system. The highest ROI improvements usually come from correct facing selection, clean gasket handling, and controlled bolting\u2014especially during commissioning.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7663b18 e-con-full e-flex e-con e-child\" data-id=\"7663b18\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-eaa7ae4 e-con-full e-flex e-con e-child\" data-id=\"eaa7ae4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-2a5f2bd e-con-full e-flex e-con e-child\" data-id=\"2a5f2bd\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-03990cc e-con-full e-flex e-con e-child\" data-id=\"03990cc\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-30142e3 elementor-widget elementor-widget-heading\" data-id=\"30142e3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">RF (Raised Face)\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eae31bb elementor-widget elementor-widget-text-editor\" data-id=\"eae31bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Common across ASME piping. Works well with many gasket types when surface finish and bolt load are controlled.<\/p><p class=\"muted\">If you want a safe default for standard services, RF is often the starting point.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a2c9734 e-con-full e-flex e-con e-child\" data-id=\"a2c9734\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-72af963 elementor-widget elementor-widget-heading\" data-id=\"72af963\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">FF (Flat Face)\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c8d853 elementor-widget elementor-widget-text-editor\" data-id=\"4c8d853\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Often specified for cast iron or when a full-face gasket is required by project spec.<\/p><p class=\"muted\">Confirm the mating flange requirement\u2014mixing FF\/RF incorrectly can cause issues.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-9a1699e e-con-full e-flex e-con e-child\" data-id=\"9a1699e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-90ba157 elementor-widget elementor-widget-heading\" data-id=\"90ba157\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">RTJ (Ring Type Joint)\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-86b9551 elementor-widget elementor-widget-text-editor\" data-id=\"86b9551\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Chosen when RTJ is specified for higher integrity sealing. Requires correct ring type and groove spec.<\/p><p class=\"muted\">RTJ failures are usually system failures: wrong ring, damaged groove, or improper assembly.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-b38f89f e-con-full e-flex e-con e-child\" data-id=\"b38f89f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-86b5244 e-con-full e-flex e-con e-child\" data-id=\"86b5244\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9fb9dbf elementor-widget elementor-widget-heading\" data-id=\"9fb9dbf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Bolting checklist <\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-94d1331 elementor-widget elementor-widget-text-editor\" data-id=\"94d1331\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><strong>1. Verify Alignment &amp; Gap<\/strong> \u00b7 <strong>2. Inspect Gasket &amp; Lubricate Threads<\/strong> \u00b7 <strong>3. Apply Star Pattern Sequence<\/strong> \u00b7 <strong>4. Multi-pass to Final Torque<\/strong>. <a href=\"https:\/\/sunhyings.com\/blog\/flange-assembly-4-steps-to-zero-leakage-joint-integrity\/#Bolting%20Sequence%20in%20Advanced%20Flange%20Joint%20Integrity%20Management\" target=\"_blank\" rel=\"noopener\"><span style=\"text-decoration: underline;\">View the Complete ASME PCC-1 Guidelines<\/span><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-83c69c6 e-con-full e-flex e-con e-parent\" data-id=\"83c69c6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-f294856 e-flex e-con-boxed e-con e-child\" data-id=\"f294856\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-4657f26 e-con-full e-flex e-con e-child\" data-id=\"4657f26\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-61ef8da elementor-widget elementor-widget-heading\" data-id=\"61ef8da\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Engineering Cases &amp; Practical Solutions<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6c386e9 e-con-full e-flex e-con e-child\" data-id=\"6c386e9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-97eb393 e-con-full e-flex e-con e-child\" data-id=\"97eb393\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8ab688e elementor-widget elementor-widget-heading\" data-id=\"8ab688e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Case 1: Vibration on compressor discharge\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4deebe0 elementor-widget elementor-widget-heading\" data-id=\"4deebe0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Problem<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5c0f868 elementor-widget elementor-widget-text-editor\" data-id=\"5c0f868\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"muted\">Seepage returned after several start-up\/shutdown cycles on a vibrating discharge line, even after gasket replacement and re-torque.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-51861e9 elementor-widget elementor-widget-heading\" data-id=\"51861e9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">What we changed<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0b34d58 elementor-widget elementor-widget-text-editor\" data-id=\"0b34d58\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul data-start=\"476\" data-end=\"715\"><li data-start=\"476\" data-end=\"557\"><p data-start=\"478\" data-end=\"557\">Switched to <strong data-start=\"490\" data-end=\"508\">Weld Neck (WN)<\/strong> for better alignment and reduced joint bending<\/p><\/li><li data-start=\"558\" data-end=\"626\"><p data-start=\"560\" data-end=\"626\">Matched <strong data-start=\"568\" data-end=\"599\">facing finish + gasket type<\/strong> to the service condition<\/p><\/li><li data-start=\"627\" data-end=\"715\"><p data-start=\"629\" data-end=\"715\">Standardized bolt-up: lubrication, <strong data-start=\"664\" data-end=\"680\">star pattern<\/strong>, staged torque, final verification<\/p><\/li><\/ul><p data-start=\"717\" data-end=\"810\"><strong data-start=\"717\" data-end=\"738\">Practical outcome<\/strong><br data-start=\"738\" data-end=\"741\" \/>Leak recurrence stopped and joint stability improved under vibration.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4545d85 e-con-full e-flex e-con e-child\" data-id=\"4545d85\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5141cec elementor-widget elementor-widget-heading\" data-id=\"5141cec\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Case 2: Chloride exposure in coastal utility system<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a1a453 elementor-widget elementor-widget-heading\" data-id=\"8a1a453\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Problem<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-026103b elementor-widget elementor-widget-text-editor\" data-id=\"026103b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"muted\">Coastal air and splash-zone exposure accelerated corrosion risk around bolting and sealing surfaces, increasing leak and rework potential.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-be86726 elementor-widget elementor-widget-heading\" data-id=\"be86726\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">What we changed<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a2fd943 elementor-widget elementor-widget-text-editor\" data-id=\"a2fd943\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul data-start=\"1051\" data-end=\"1300\"><li data-start=\"1051\" data-end=\"1141\"><p data-start=\"1053\" data-end=\"1141\">Upgraded material strategy to <strong data-start=\"1083\" data-end=\"1100\">316L \/ duplex<\/strong> based on chloride risk and temperature<\/p><\/li><li data-start=\"1142\" data-end=\"1219\"><p data-start=\"1144\" data-end=\"1219\">Added receiving controls: <strong data-start=\"1170\" data-end=\"1199\">traceability + PMI checks<\/strong> for critical lots<\/p><\/li><li data-start=\"1220\" data-end=\"1300\"><p data-start=\"1222\" data-end=\"1300\">Protected machined faces during storage\/handling to prevent crevice initiation<\/p><\/li><\/ul><p data-start=\"1302\" data-end=\"1420\"><strong data-start=\"1302\" data-end=\"1323\">Practical outcome<\/strong><br data-start=\"1323\" data-end=\"1326\" \/>Less corrosion-related rework and more consistent sealing performance over maintenance cycles.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4a53f7e e-con-full e-flex e-con e-child\" data-id=\"4a53f7e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-18d8624 elementor-widget elementor-widget-heading\" data-id=\"18d8624\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Case 3: Thermal cycling on steam \/ hot oil lines\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bccb2bd elementor-widget elementor-widget-heading\" data-id=\"bccb2bd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Problem<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9f20ae7 elementor-widget elementor-widget-text-editor\" data-id=\"9f20ae7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Frequent start\/stop and thermal expansion cycles increased leak risk due to preload loss and fit-up stress.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9aa27d7 elementor-widget elementor-widget-heading\" data-id=\"9aa27d7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">What we changed<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-258dfa4 elementor-widget elementor-widget-text-editor\" data-id=\"258dfa4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul data-start=\"1627\" data-end=\"1855\"><li data-start=\"1627\" data-end=\"1697\"><p data-start=\"1629\" data-end=\"1697\">Confirmed correct <strong data-start=\"1647\" data-end=\"1667\">standard + class<\/strong> for stiffness under cycling<\/p><\/li><li data-start=\"1698\" data-end=\"1774\"><p data-start=\"1700\" data-end=\"1774\">Matched <strong data-start=\"1708\" data-end=\"1729\">gasket and facing<\/strong> to the temperature range and cycle profile<\/p><\/li><li data-start=\"1775\" data-end=\"1855\"><p data-start=\"1777\" data-end=\"1855\">Controlled installation: alignment first, avoid pull-to-fit, staged tightening<\/p><\/li><\/ul><p data-start=\"1857\" data-end=\"1968\"><strong data-start=\"1857\" data-end=\"1878\">Practical outcome<\/strong><br data-start=\"1878\" data-end=\"1881\" \/>More repeatable performance across cycles and reduced leak-up during heat-up\/cool-down.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8477a6b e-flex e-con-boxed e-con e-parent\" data-id=\"8477a6b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-d0fb66d e-con-full e-flex e-con e-child\" data-id=\"d0fb66d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-52d5501 e-con-full e-flex e-con e-child\" data-id=\"52d5501\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-48f2606 elementor-widget elementor-widget-heading\" data-id=\"48f2606\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Quality, Traceability &amp; \u201cProof Pack\u201d<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f27a73d elementor-widget elementor-widget-text-editor\" data-id=\"f27a73d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"sunhy-lead\">If you are sourcing internationally, what matters is not what a supplier says\u2014they need to show consistent traceability and inspection discipline.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bc49560 e-con-full e-flex e-con e-child\" data-id=\"bc49560\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-184284a e-con-full e-flex e-con e-child\" data-id=\"184284a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-ac1aa61 e-con-full e-flex e-con e-child\" data-id=\"ac1aa61\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8d3ca27 elementor-widget elementor-widget-heading\" data-id=\"8d3ca27\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What we can provide per shipment\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-075a084 elementor-widget elementor-widget-text-editor\" data-id=\"075a084\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li><b>EN 10204 3.1 MTR<\/b>\u00a0with Heat No. traceability<\/li><li><b>PMI record<\/b>\u00a0(as required)<\/li><li><b>Dimensional inspection<\/b>\u00a0key items per standard<\/li><li><b>NDT reports<\/b>\u00a0(UT\/RT\/PT\/MT) if specified<\/li><li><b>Marking list<\/b>: NPS, class, material, standard, heat<\/li><\/ul><p class=\"muted\">Add your real sample links for trust (redact sensitive info).<\/p><p>Sample 3.1 MTR (redacted)\u00a0\u2022\u00a0Sample PMI \/ inspection\u00a0\u2022\u00a0ISO certificate<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-31426b7 e-con-full e-flex e-con e-child\" data-id=\"31426b7\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b5e3630 elementor-widget elementor-widget-heading\" data-id=\"b5e3630\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Process snapshot (high-level)<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9d4a7a3 elementor-widget elementor-widget-text-editor\" data-id=\"9d4a7a3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Raw material control \u2192 forging \u2192 heat treatment (as required)<\/li><li>CNC machining \u2192 facing finish control \u2192 marking<\/li><li>Inspection &amp; verification \u2192 surface protection \u2192 export packing<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8071e15 e-con-full e-flex e-con e-child\" data-id=\"8071e15\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-e2d9aa9 e-con-full e-flex e-con e-child\" data-id=\"e2d9aa9\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-af1eaa4 elementor-widget elementor-widget-heading\" data-id=\"af1eaa4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Engineer note\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4694861 elementor-widget elementor-widget-text-editor\" data-id=\"4694861\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>For critical service, the \u201clast 5%\u201d matters: sealing surface protection, correct facing, and documentation discipline. If you want repeat orders from EPCs, publish evidence\u2014photos, reports, and traceability.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7b20f9a e-flex e-con-boxed e-con e-parent\" data-id=\"7b20f9a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-bced6a3 e-con-full e-flex e-con e-child\" data-id=\"bced6a3\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-d3689a2 e-con-full e-flex e-con e-child\" data-id=\"d3689a2\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6503a01 elementor-widget elementor-widget-heading\" data-id=\"6503a01\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">RFQ Checklist <\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-eedd5cb elementor-widget elementor-widget-text-editor\" data-id=\"eedd5cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"sunhy-lead\">Use this checklist to receive a faster, cleaner quotation and reduce rework at receiving and installation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c1b2149 e-con-full e-flex e-con e-child\" data-id=\"c1b2149\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-9809a1d e-con-full e-flex e-con e-child\" data-id=\"9809a1d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-85518f7 e-con-full e-flex e-con e-child\" data-id=\"85518f7\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c7ab3bb elementor-widget elementor-widget-heading\" data-id=\"c7ab3bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">What we can provide per shipment\n<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-af6c21d elementor-widget elementor-widget-text-editor\" data-id=\"af6c21d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul>\n \t<li><b>Standard:<\/b>\u00a0ASME B16.5 \/ B16.47 (Series A\/B)<\/li>\n \t<li><b>NPS &amp; Qty:<\/b>\u00a0[e.g., 6&#8243; x 40 pcs]<\/li>\n \t<li><b>Class:<\/b>\u00a0150 \/ 300 \/ 600 \/ 900 \/ 1500 \/ 2500<\/li>\n \t<li><b>Facing:<\/b>\u00a0RF \/ FF \/ RTJ (ring type if RTJ)<\/li>\n \t<li><b>Material:<\/b> 304\/304L, 316\/316L, 2205, 2507, or per project specification<\/li>\n \t<li><b>Bore\/Schedule:<\/b>\u00a0[Sch 40 \/ Sch 80 \/ required bore]<\/li>\n \t<li><b>Inspection &amp; docs:<\/strong> EN 10204 3.1 MTR, PMI, dimensional report, and NDT per project requirement (UT\/RT\/PT\/MT as specified)<\/li>\n \t<li><b>Packing &amp; docs:<\/b>\u00a0export packing, COO, fumigation if needed, marking requirements<\/li>\n<\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5fd4ab6 e-con-full e-flex e-con e-child\" data-id=\"5fd4ab6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-9523965 elementor-widget elementor-widget-button\" data-id=\"9523965\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Request a Quote<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-23213eb elementor-widget elementor-widget-button\" data-id=\"23213eb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"#\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Download Dimensions<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c6eb7ce e-flex e-con-boxed e-con e-parent\" data-id=\"c6eb7ce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-026dbfe elementor-widget elementor-widget-html\" data-id=\"026dbfe\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n  .sunhy-relind{--accent:#1E51A2;--card:#f3f5f7;--text:#111;font-family:inherit;}\r\n  .sunhy-relind .wrap{max-width:1600px;margin:0 auto;padding:36px 16px;}\r\n  .sunhy-relind .title{margin:0;text-align:center;font-size:40px;font-weight:700;color:#1E51A2;}\r\n  .sunhy-relind .underline{width:44px;height:4px;background:var(--accent);margin:10px auto 30px;border-radius:8px;}\r\n  .sunhy-relind .grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:26px;}\r\n  .sunhy-relind .card{\r\n    position:relative;background:var(--card);border-radius:2px;min-height:150px;padding:22px 14px 18px;\r\n    display:flex;flex-direction:column;align-items:center;justify-content:center;\r\n    text-decoration:none;overflow:hidden;transition:transform .15s ease, box-shadow .15s ease;\r\n  }\r\n  .sunhy-relind .card:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(0,0,0,.08);}\r\n  .sunhy-relind .card::after{\r\n    content:\"\";position:absolute;right:14px;bottom:14px;width:74px;height:74px;opacity:.12;\r\n    background-repeat:no-repeat;background-size:contain;pointer-events:none;\r\n    background-image:url(\"data:image\/svg+xml,%3Csvg xmlns='http:\/\/www.w3.org\/2000\/svg' width='90' height='90' viewBox='0 0 64 64'%3E%3Cpath fill='none' stroke='%231B5DC8' stroke-width='2.2' d='M22 10c0 10-10 14-10 26a16 16 0 0 0 32 0c0-12-10-16-10-26'\/%3E%3Cpath fill='none' stroke='%231B5DC8' stroke-width='2.2' d='M42 30c0 6-5 8-5 15a9 9 0 0 0 18 0c0-7-5-9-5-15'\/%3E%3C\/svg%3E\");\r\n  }\r\n  .sunhy-relind .icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;margin-bottom:14px;}\r\n  .sunhy-relind svg{stroke:var(--accent);}\r\n  .sunhy-relind .label{color:var(--accent);font-weight:600;font-size:15px;text-align:center;line-height:1.2;}\r\n\r\n  @media (max-width:1100px){ .sunhy-relind .grid{grid-template-columns:repeat(4,1fr);} }\r\n  @media (max-width:860px){ .sunhy-relind .grid{grid-template-columns:repeat(3,1fr);} .sunhy-relind .title{font-size:32px;} }\r\n  @media (max-width:560px){ .sunhy-relind .grid{grid-template-columns:repeat(2,1fr);} }\r\n<\/style>\r\n\r\n<section class=\"sunhy-relind sunhy-relind-flanges\" aria-label=\"Related Industries & Applications - Flanges\">\r\n  <div class=\"wrap\">\r\n    <h2 class=\"title\">RELATED INDUSTRIES &amp; APPLICATIONS<\/h2>\r\n    <div class=\"underline\"><\/div>\r\n\r\n    <div class=\"grid\">\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Upstream -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M14 48l10-22 12 6 14-14 4 4-14 14 6 12\"\/><path d=\"M18 48h30\"\/>\r\n        <\/svg><\/div><div class=\"label\">Upstream (Exploration)<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Downstream -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M12 52h40\"\/><path d=\"M16 52V28l10 6V28l10 6V24l8 4v24\"\/><path d=\"M42 18v6\"\/>\r\n        <\/svg><\/div><div class=\"label\">Downstream (Refining)<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Offshore -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M18 46h28\"\/><path d=\"M22 46l6-24h8l6 24\"\/><path d=\"M20 30h24\"\/><path d=\"M14 52h36\"\/>\r\n        <\/svg><\/div><div class=\"label\">Offshore Platforms<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Power generation -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M14 52h36\"\/><path d=\"M18 52V28h10v22\"\/><path d=\"M30 52V22h10v30\"\/><path d=\"M42 52V32h6v20\"\/>\r\n        <\/svg><\/div><div class=\"label\">Power Generation<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Nuclear -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M32 28v10\"\/><path d=\"M32 18h0\"\/><path d=\"M32 32l16-4c0 10-6 18-16 20-10-2-16-10-16-20z\"\/><path d=\"M32 32l-16-4\"\/><path d=\"M32 32l0-16\"\/>\r\n        <\/svg><\/div><div class=\"label\">Nuclear Power<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Thermal -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M24 52V20h16v32\"\/><path d=\"M22 20h20\"\/><path d=\"M28 30h8\"\/><path d=\"M28 38h8\"\/>\r\n        <\/svg><\/div><div class=\"label\">Thermal Power Plants<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- H2 -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M22 18v28a10 10 0 0 0 20 0V18\"\/><path d=\"M22 30h20\"\/><path d=\"M18 18h28\"\/>\r\n        <\/svg><\/div><div class=\"label\">Hydrogen Energy (H2)<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Solar -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M22 40l-4 12h28l-4-12z\"\/><path d=\"M22 40h20\"\/><path d=\"M26 18h12\"\/><path d=\"M32 12v6\"\/><path d=\"M22 22l4 4\"\/><path d=\"M42 22l-4 4\"\/>\r\n        <\/svg><\/div><div class=\"label\">Solar &amp; Photovoltaic<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Wind -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M32 20v34\"\/><path d=\"M32 20l16 6-16 6-16-6z\"\/><path d=\"M26 54h12\"\/>\r\n        <\/svg><\/div><div class=\"label\">Wind Power<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Petrochemical -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M12 52h40\"\/><path d=\"M16 52V30h10v22\"\/><path d=\"M32 52V24h10v28\"\/><path d=\"M42 18v6\"\/>\r\n        <\/svg><\/div><div class=\"label\">Petrochemical Plants<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Desalination -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M18 18h28l-10 16v16H28V34z\"\/><path d=\"M22 18l10 16 10-16\"\/>\r\n        <\/svg><\/div><div class=\"label\">Desalination (SWRO)<\/div><\/a>\r\n\r\n      <a class=\"card\" href=\"#\"><div class=\"icon\">\r\n        <!-- Shipbuilding -->\r\n        <svg viewBox=\"0 0 64 64\" width=\"56\" height=\"56\" fill=\"none\" stroke-width=\"2.6\" stroke-linecap=\"round\" stroke-linejoin=\"round\">\r\n          <path d=\"M14 40h36l-6 10H20z\"\/><path d=\"M26 40V26h12v14\"\/><path d=\"M18 50h28\"\/>\r\n        <\/svg><\/div><div class=\"label\">Shipbuilding<\/div><\/a>\r\n    <\/div>\r\n  <\/div>\r\n<\/section>\r\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d564b94 e-flex e-con-boxed e-con e-parent\" data-id=\"d564b94\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1c471b0 elementor-widget elementor-widget-heading\" data-id=\"1c471b0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Related blog<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c2ccee1 elementor-grid-4 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-widget elementor-widget-portfolio\" data-id=\"c2ccee1\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;columns&quot;:&quot;4&quot;,&quot;masonry&quot;:&quot;yes&quot;,&quot;row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:25,&quot;sizes&quot;:[]},&quot;columns_tablet&quot;:&quot;2&quot;,&quot;columns_mobile&quot;:&quot;1&quot;,&quot;item_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"portfolio.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-portfolio elementor-grid elementor-posts-container\" role=\"list\">\n\t\t\t\t<article class=\"elementor-portfolio-item elementor-post  post-1968 post type-post status-publish format-standard has-post-thumbnail hentry category-selection-comparison tag-flange-slip-on tag-flange-weld-neck tag-pf-flanges tag-topic-comparison tag-topic-selection\" role=\"listitem\">\n\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/sunhyings.com\/it\/blog\/slip-on-flange-vs-weld-neck-flange\/\">\n\t\t\t\t<div class=\"elementor-portfolio-item__img elementor-post__thumbnail\">\n\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"768\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Slip-On-Flange-VS-Weld-Neck-Flange-What-Are-The-Differences1-768x768.webp\" class=\"attachment-medium_large size-medium_large wp-image-7701\" alt=\"Slip-On Flange VS Weld Neck Flange : What Are The Differences?\" srcset=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Slip-On-Flange-VS-Weld-Neck-Flange-What-Are-The-Differences1-768x768.webp 768w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Slip-On-Flange-VS-Weld-Neck-Flange-What-Are-The-Differences1-800x800.webp 800w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Slip-On-Flange-VS-Weld-Neck-Flange-What-Are-The-Differences1-1024x1024.webp 1024w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Slip-On-Flange-VS-Weld-Neck-Flange-What-Are-The-Differences1-300x300.webp 300w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Slip-On-Flange-VS-Weld-Neck-Flange-What-Are-The-Differences1-1536x1536.webp 1536w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Slip-On-Flange-VS-Weld-Neck-Flange-What-Are-The-Differences1-12x12.webp 12w, https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/10\/Slip-On-Flange-VS-Weld-Neck-Flange-What-Are-The-Differences1.webp 2048w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/>\t\t<\/div>\n\t\t\t\t<div class=\"elementor-portfolio-item__overlay\">\n\t\t\t\t<h3 class=\"elementor-portfolio-item__title\">\n\t\tSlip-On Flange VS Weld Neck Flange : What Are The Differences?\t\t<\/h3>\n\t\t\t\t<\/div>\n\t\t\t\t<\/a>\n\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-300eb119 e-flex e-con-boxed e-con e-parent\" data-id=\"300eb119\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1be9d5f e-con-full e-flex e-con e-child\" data-id=\"1be9d5f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1c484a7 elementor-widget elementor-widget-heading\" data-id=\"1c484a7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">FAQ<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e286108 elementor-widget__width-initial elementor-widget elementor-widget-toggle\" data-id=\"7e286108\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"toggle.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-toggle\">\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h5 id=\"elementor-tab-title-2111\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-2111\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43.104\" height=\"45.888\" viewBox=\"0 0 43.104 45.888\"><polygon points=\"24.096 20.16 24.096 0 19.008 0 19.008 20.16 0 20.16 0 25.248 19.008 25.248 19.008 45.888 24.096 45.888 24.096 25.248 43.104 25.248 43.104 20.16 24.096 20.16\"><\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43\" height=\"6\" viewBox=\"0 0 43 6\"><rect width=\"43\" height=\"6\"><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">What is the purpose of a weld neck flange?<\/a>\n\t\t\t\t\t<\/h5>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-2111\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-2111\"><p>A weld neck flange is designed for high-integrity connections in &#8220;severe service&#8221; applications, such as high-pressure and high-temperature piping systems. Its primary purpose is to manage stress. It achieves this through two key features:<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0<\/span><\/p><ol start=\"1\"><li><p><b>A Long, Tapered Hub:<\/b> This hub provides a gradual transition from the thick flange base to the thinner pipe wall. This design transfers stress away from the flange and into the pipe, dramatically reducing stress concentration at the connection.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0<\/span><\/p><div class=\"container ng-tns-c2591737816-4451 hide\"><div class=\"carousel-container ng-tns-c2591737816-4451\">\u00a0<\/div><\/div><\/li><li><p><b>A Matching Bore:<\/b> The flange&#8217;s internal diameter (bore) is machined to match the pipe&#8217;s inside diameter perfectly. This creates a smooth, unrestricted flow path that minimizes turbulence, erosion, and pressure drop.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0<\/span><\/p><div class=\"container ng-tns-c2591737816-4452 hide\"><div class=\"carousel-container ng-tns-c2591737816-4452\">\u00a0<\/div><\/div><\/li><\/ol><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h5 id=\"elementor-tab-title-2112\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-2112\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43.104\" height=\"45.888\" viewBox=\"0 0 43.104 45.888\"><polygon points=\"24.096 20.16 24.096 0 19.008 0 19.008 20.16 0 20.16 0 25.248 19.008 25.248 19.008 45.888 24.096 45.888 24.096 25.248 43.104 25.248 43.104 20.16 24.096 20.16\"><\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43\" height=\"6\" viewBox=\"0 0 43 6\"><rect width=\"43\" height=\"6\"><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">How are weld neck flanges manufactured?<\/a>\n\t\t\t\t\t<\/h5>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-2112\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-2112\"><p>Weld neck flanges are manufactured through a multi-stage process where forging is the most critical step for ensuring strength.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0<\/span><\/p><ol start=\"1\"><li><p><b>Forging:<\/b> The process starts with heating a raw material billet (like carbon or stainless steel) and using intense compressive force to shape it. For a weld neck flange, this forging process forms the flange and its characteristic &#8220;integral&#8221; neck as a single, solid piece. This aligns the steel&#8217;s grain structure, making it incredibly strong.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0<\/span><\/p><div class=\"container ng-tns-c2591737816-4454 hide\"><div class=\"carousel-container ng-tns-c2591737816-4454\">\u00a0<\/div><\/div><\/li><li><p><b>Heat Treatment:<\/b> After forging, the flange is heat-treated (e.g., normalized and tempered) to relieve internal stresses and increase its toughness and durability.<span class=\"button-container hide-from-message-actions ng-star-inserted\"> \u00a0<\/span><\/p><div class=\"container ng-tns-c2591737816-4455 hide\"><div class=\"carousel-container ng-tns-c2591737816-4455\">\u00a0<\/div><\/div><\/li><li><p><b>Machining:<\/b> The rough, forged part is then precision-machined to its exact final dimensions. This includes drilling the bolt holes, cutting the serrated gasket-sealing face, and machining the 37.5-degree weld bevel at the end of the neck.<span class=\"button-container hide-from-message-actions ng-star-inserted\"> \u00a0<\/span><\/p><\/li><\/ol><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h5 id=\"elementor-tab-title-2113\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-2113\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43.104\" height=\"45.888\" viewBox=\"0 0 43.104 45.888\"><polygon points=\"24.096 20.16 24.096 0 19.008 0 19.008 20.16 0 20.16 0 25.248 19.008 25.248 19.008 45.888 24.096 45.888 24.096 25.248 43.104 25.248 43.104 20.16 24.096 20.16\"><\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43\" height=\"6\" viewBox=\"0 0 43 6\"><rect width=\"43\" height=\"6\"><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">what is a long weld neck flange\u200b<\/a>\n\t\t\t\t\t<\/h5>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-2113\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-2113\"><div class=\"carousel-container ng-tns-c2591737816-4459\">A Long Weld Neck (LWN) flange is a specialized variant that is primarily used as a <b>nozzle<\/b> on pressure vessels, tanks, or columns.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0\u00a0<\/span><\/div><div id=\"model-response-message-contentr_8d405e6c6dccb5bb\" class=\"markdown markdown-main-panel stronger enable-updated-hr-color\" dir=\"ltr\" aria-live=\"polite\" aria-busy=\"false\"><p>It is <i>not<\/i> typically used to connect two pipes. Its purpose is to replace a traditional, fabricated nozzle, which would require welding a standard flange to a separate piece of pipe.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0<\/span><\/p><p>The key differences from a standard weld neck flange are:<\/p><ul><li><p><b>End Preparation:<\/b> An LWN flange typically has a <b>square-cut end<\/b>, not a beveled end.<span class=\"button-container hide-from-message-actions ng-star-inserted\"> \u00a0<\/span><\/p><div class=\"container ng-tns-c2591737816-4462 hide\"><div class=\"carousel-container ng-tns-c2591737816-4462\">\u00a0<\/div><\/div><\/li><li><p><b>Bore:<\/b> It has a <b>nominal bore<\/b> (e.g., a 2-inch LWN has a 2-inch bore) and does <i>not<\/i> have a &#8220;schedule bore&#8221; to match a pipe&#8217;s wall thickness.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0 \u00a0<\/span><\/p><div class=\"container ng-tns-c2591737816-4463 hide\"><div class=\"carousel-container ng-tns-c2591737816-4463\">\u00a0<\/div><\/div><\/li><li><p><b>Function:<\/b> It provides &#8220;integral self-reinforcement&#8221; by eliminating the flange-to-pipe weld, creating a stronger and safer connection for the vessel.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0<\/span><\/p><\/li><\/ul><\/div><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-toggle-item\">\n\t\t\t\t\t<h5 id=\"elementor-tab-title-2114\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-2114\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon elementor-toggle-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-closed\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43.104\" height=\"45.888\" viewBox=\"0 0 43.104 45.888\"><polygon points=\"24.096 20.16 24.096 0 19.008 0 19.008 20.16 0 20.16 0 25.248 19.008 25.248 19.008 45.888 24.096 45.888 24.096 25.248 43.104 25.248 43.104 20.16 24.096 20.16\"><\/polygon><\/svg><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-toggle-icon-opened\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"a\" width=\"43\" height=\"6\" viewBox=\"0 0 43 6\"><rect width=\"43\" height=\"6\"><\/rect><\/svg><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-toggle-title\" tabindex=\"0\">How to install a weld neck flange<\/a>\n\t\t\t\t\t<\/h5>\n\n\t\t\t\t\t<div id=\"elementor-tab-content-2114\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-2114\"><p>A proper weld neck flange installation is a high-skill, three-phase operation:<\/p><ol start=\"1\"><li><p><b>Preparation &amp; Fit-Up:<\/b> Both the flange neck and the pipe end must have matching 37.5-degree bevels to form a &#8220;V-groove&#8221; for welding. The components must be perfectly aligned (matching the internal bores, ensuring faces are parallel, and &#8220;two-holing&#8221; to level the bolt holes) and set with a small &#8220;root gap&#8221; to allow full weld penetration.<span class=\"button-container hide-from-message-actions ng-star-inserted\">\u00a0<\/span><\/p><div class=\"container ng-tns-c2591737816-4457 hide\"><div class=\"carousel-container ng-tns-c2591737816-4457\">\u00a0<\/div><\/div><\/li><li><p><b>Welding:<\/b> The flange is first secured with &#8220;tack welds&#8221; to prevent movement. A certified welder then performs the full circumferential butt weld to fuse the flange and pipe into a single, continuous piece, following a qualified procedure (like ASME B31.3).<span class=\"button-container hide-from-message-actions ng-star-inserted\"> \u00a0<\/span><\/p><div class=\"container ng-tns-c2591737816-4458 hide\"><div class=\"carousel-container ng-tns-c2591737816-4458\">\u00a0<\/div><\/div><\/li><li><p><b>Bolted Assembly:<\/b> A new, clean gasket is centered on the flange face. Bolts and nuts are lubricated, then tightened in a &#8220;cross-pattern&#8221; (or &#8220;star pattern&#8221;) in multiple stages (e.g., to 30%, 60%, then 100% of the final torque) to ensure the gasket is compressed evenly, as per standards like ASME PCC-1.<\/p><div class=\"container ng-tns-c2591737816-4459 hide\"><div class=\"carousel-container ng-tns-c2591737816-4459\">\u00a0<\/div><\/div><\/li><\/ol><h3>\u00a0<\/h3><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<script type=\"application\/ld+json\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is the purpose of a weld neck flange?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>A weld neck flange is designed for high-integrity connections in &#8220;severe service&#8221; applications, such as high-pressure and high-temperature piping systems. Its primary purpose is to manage stress. It achieves this through two key features:<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0<\\\/span><\\\/p><ol start=\\\"1\\\"><li><p><b>A Long, Tapered Hub:<\\\/b> This hub provides a gradual transition from the thick flange base to the thinner pipe wall. This design transfers stress away from the flange and into the pipe, dramatically reducing stress concentration at the connection.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0<\\\/span><\\\/p><div class=\\\"container ng-tns-c2591737816-4451 hide\\\"><div class=\\\"carousel-container ng-tns-c2591737816-4451\\\">\\u00a0<\\\/div><\\\/div><\\\/li><li><p><b>A Matching Bore:<\\\/b> The flange&#8217;s internal diameter (bore) is machined to match the pipe&#8217;s inside diameter perfectly. This creates a smooth, unrestricted flow path that minimizes turbulence, erosion, and pressure drop.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0<\\\/span><\\\/p><div class=\\\"container ng-tns-c2591737816-4452 hide\\\"><div class=\\\"carousel-container ng-tns-c2591737816-4452\\\">\\u00a0<\\\/div><\\\/div><\\\/li><\\\/ol>\"}},{\"@type\":\"Question\",\"name\":\"How are weld neck flanges manufactured?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>Weld neck flanges are manufactured through a multi-stage process where forging is the most critical step for ensuring strength.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0<\\\/span><\\\/p><ol start=\\\"1\\\"><li><p><b>Forging:<\\\/b> The process starts with heating a raw material billet (like carbon or stainless steel) and using intense compressive force to shape it. For a weld neck flange, this forging process forms the flange and its characteristic &#8220;integral&#8221; neck as a single, solid piece. This aligns the steel&#8217;s grain structure, making it incredibly strong.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0<\\\/span><\\\/p><div class=\\\"container ng-tns-c2591737816-4454 hide\\\"><div class=\\\"carousel-container ng-tns-c2591737816-4454\\\">\\u00a0<\\\/div><\\\/div><\\\/li><li><p><b>Heat Treatment:<\\\/b> After forging, the flange is heat-treated (e.g., normalized and tempered) to relieve internal stresses and increase its toughness and durability.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\"> \\u00a0<\\\/span><\\\/p><div class=\\\"container ng-tns-c2591737816-4455 hide\\\"><div class=\\\"carousel-container ng-tns-c2591737816-4455\\\">\\u00a0<\\\/div><\\\/div><\\\/li><li><p><b>Machining:<\\\/b> The rough, forged part is then precision-machined to its exact final dimensions. This includes drilling the bolt holes, cutting the serrated gasket-sealing face, and machining the 37.5-degree weld bevel at the end of the neck.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\"> \\u00a0<\\\/span><\\\/p><\\\/li><\\\/ol>\"}},{\"@type\":\"Question\",\"name\":\"what is a long weld neck flange\\u200b\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<div class=\\\"carousel-container ng-tns-c2591737816-4459\\\">A Long Weld Neck (LWN) flange is a specialized variant that is primarily used as a <b>nozzle<\\\/b> on pressure vessels, tanks, or columns.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0\\u00a0<\\\/span><\\\/div><div id=\\\"model-response-message-contentr_8d405e6c6dccb5bb\\\" class=\\\"markdown markdown-main-panel stronger enable-updated-hr-color\\\" dir=\\\"ltr\\\" aria-live=\\\"polite\\\" aria-busy=\\\"false\\\"><p>It is <i>not<\\\/i> typically used to connect two pipes. Its purpose is to replace a traditional, fabricated nozzle, which would require welding a standard flange to a separate piece of pipe.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0<\\\/span><\\\/p><p>The key differences from a standard weld neck flange are:<\\\/p><ul><li><p><b>End Preparation:<\\\/b> An LWN flange typically has a <b>square-cut end<\\\/b>, not a beveled end.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\"> \\u00a0<\\\/span><\\\/p><div class=\\\"container ng-tns-c2591737816-4462 hide\\\"><div class=\\\"carousel-container ng-tns-c2591737816-4462\\\">\\u00a0<\\\/div><\\\/div><\\\/li><li><p><b>Bore:<\\\/b> It has a <b>nominal bore<\\\/b> (e.g., a 2-inch LWN has a 2-inch bore) and does <i>not<\\\/i> have a &#8220;schedule bore&#8221; to match a pipe&#8217;s wall thickness.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0 \\u00a0<\\\/span><\\\/p><div class=\\\"container ng-tns-c2591737816-4463 hide\\\"><div class=\\\"carousel-container ng-tns-c2591737816-4463\\\">\\u00a0<\\\/div><\\\/div><\\\/li><li><p><b>Function:<\\\/b> It provides &#8220;integral self-reinforcement&#8221; by eliminating the flange-to-pipe weld, creating a stronger and safer connection for the vessel.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0<\\\/span><\\\/p><\\\/li><\\\/ul><\\\/div>\"}},{\"@type\":\"Question\",\"name\":\"How to install a weld neck flange\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"<p>A proper weld neck flange installation is a high-skill, three-phase operation:<\\\/p><ol start=\\\"1\\\"><li><p><b>Preparation &amp; Fit-Up:<\\\/b> Both the flange neck and the pipe end must have matching 37.5-degree bevels to form a &#8220;V-groove&#8221; for welding. The components must be perfectly aligned (matching the internal bores, ensuring faces are parallel, and &#8220;two-holing&#8221; to level the bolt holes) and set with a small &#8220;root gap&#8221; to allow full weld penetration.<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\">\\u00a0<\\\/span><\\\/p><div class=\\\"container ng-tns-c2591737816-4457 hide\\\"><div class=\\\"carousel-container ng-tns-c2591737816-4457\\\">\\u00a0<\\\/div><\\\/div><\\\/li><li><p><b>Welding:<\\\/b> The flange is first secured with &#8220;tack welds&#8221; to prevent movement. A certified welder then performs the full circumferential butt weld to fuse the flange and pipe into a single, continuous piece, following a qualified procedure (like ASME B31.3).<span class=\\\"button-container hide-from-message-actions ng-star-inserted\\\"> \\u00a0<\\\/span><\\\/p><div class=\\\"container ng-tns-c2591737816-4458 hide\\\"><div class=\\\"carousel-container ng-tns-c2591737816-4458\\\">\\u00a0<\\\/div><\\\/div><\\\/li><li><p><b>Bolted Assembly:<\\\/b> A new, clean gasket is centered on the flange face. Bolts and nuts are lubricated, then tightened in a &#8220;cross-pattern&#8221; (or &#8220;star pattern&#8221;) in multiple stages (e.g., to 30%, 60%, then 100% of the final torque) to ensure the gasket is compressed evenly, as per standards like ASME PCC-1.<\\\/p><div class=\\\"container ng-tns-c2591737816-4459 hide\\\"><div class=\\\"carousel-container ng-tns-c2591737816-4459\\\">\\u00a0<\\\/div><\\\/div><\\\/li><\\\/ol><h3>\\u00a0<\\\/h3>\"}}]}<\/script>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f536349 e-flex e-con-boxed e-con e-parent\" data-id=\"f536349\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f8e1b32 elementor-widget elementor-widget-html\" data-id=\"f8e1b32\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"html.default\">\n\t\t\t\t\t<style>\r\n  \/* Sunhy Engineer Review Card \u2014 Clean, Generic (Flanges + Machined Parts), Light Humor *\/\r\n  .sunhy-review-card{\r\n    background:#fff;\r\n    border:1px solid #e2e8f0;\r\n    border-top:4px solid #1E51A2; \/* Brand blue *\/\r\n    border-radius:10px;\r\n    padding:20px;\r\n    font-family:inherit;\r\n    box-shadow:0 2px 10px rgba(15,23,42,0.06);\r\n\r\n    display:flex;\r\n    gap:18px;\r\n    flex-wrap:wrap;\r\n  }\r\n\r\n  .sunhy-review-left{\r\n    flex:0 0 166px;\r\n    text-align:center;\r\n  }\r\n  .sunhy-review-avatar{\r\n    width:86px;height:86px;border-radius:50%;\r\n    object-fit:cover;\r\n    border:3px solid #f1f5f9;\r\n    box-shadow:0 2px 6px rgba(0,0,0,0.10);\r\n    margin-bottom:10px;\r\n  }\r\n\r\n  .sunhy-review-tags{\r\n    display:flex;\r\n    flex-wrap:wrap;\r\n    justify-content:center;\r\n    gap:6px;\r\n  }\r\n  .sunhy-tag{\r\n    font-size:12px;\r\n    color:#0f172a;\r\n    border:1px solid #e2e8f0;\r\n    background:#f8fafc;\r\n    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display:inline-flex;\r\n    align-items:center;\r\n    gap:8px;\r\n    transition:0.2s;\r\n  }\r\n  .sunhy-btn-ghost:hover{background:#f8fafc;border-color:#cbd5e1;}\r\n\r\n  .sunhy-mini-note{\r\n    margin-top:8px;\r\n    font-size:12px;\r\n    color:#64748b;\r\n  }\r\n\r\n  @media (max-width:560px){\r\n    .sunhy-review-left{flex:0 0 100%;}\r\n    .sunhy-review-tags{justify-content:flex-start;}\r\n  }\r\n<\/style>\r\n\r\n<div class=\"sunhy-review-card\" role=\"region\" aria-label=\"Engineer-reviewed content notice\">\r\n\r\n  <div class=\"sunhy-review-left\">\r\n    <img decoding=\"async\" src=\"https:\/\/sunhyings.com\/wp-content\/uploads\/2025\/12\/Raymon.webp\" alt=\"Technical Reviewer - Raymon Yu\" class=\"sunhy-review-avatar\">\r\n\r\n    <div class=\"sunhy-review-tags\">\r\n      <span class=\"sunhy-tag\"><b>15+ years<\/b> experience<\/span>\r\n      <span class=\"sunhy-tag\">Piping<\/span>\r\n      <span class=\"sunhy-tag\">Flanges<\/span>\r\n      <span class=\"sunhy-tag\">Machined Parts<\/span>\r\n    <\/div>\r\n\r\n    <div class=\"sunhy-mini-note\">Updated: <strong>Dec 2025<\/strong><\/div>\r\n  <\/div>\r\n\r\n  <div class=\"sunhy-review-right\">\r\n\r\n    <div class=\"sunhy-review-head\">\r\n      <div>\r\n        <h3 class=\"sunhy-review-name\">Raymon Yu<\/h3>\r\n        <div class=\"sunhy-review-title\">Technical Lead @ Sunhy \u2022 Joint Design &amp; Manufacturing Support<\/div>\r\n      <\/div>\r\n      <div class=\"sunhy-review-badge\"><span class=\"sunhy-dot\"><\/span> Technically Reviewed<\/div>\r\n    <\/div>\r\n\r\n    <p class=\"sunhy-review-quote\">\r\n      \u201cWhen a flange joint fails on site, it\u2019s rarely because someone can\u2019t read a standard.\r\n      It\u2019s usually because one detail was assumed instead of specified. I reviewed the key technical content on this page to keep it\r\n      <strong>practical, spec-aligned, and RFQ-ready<\/strong>. (We prefer assumptions for lunch choices.)\u201d\r\n    <\/p>\r\n\r\n    <div class=\"sunhy-review-check\" aria-label=\"Verification checklist\">\r\n      <div class=\"sunhy-check-item\">\r\n        <svg viewBox=\"0 0 20 20\" aria-hidden=\"true\"><path d=\"M0 11l2-2 5 5L18 3l2 2L7 18z\"\/><\/svg>\r\n        Terminology &amp; scope aligned with common standards and project specifications\r\n      <\/div>\r\n      <div class=\"sunhy-check-item\">\r\n        <svg viewBox=\"0 0 20 20\" aria-hidden=\"true\"><path d=\"M0 11l2-2 5 5L18 3l2 2L7 18z\"\/><\/svg>\r\n        Selection guidance written for real installation, commissioning, and maintenance conditions\r\n      <\/div>\r\n      <div class=\"sunhy-check-item\">\r\n        <svg viewBox=\"0 0 20 20\" aria-hidden=\"true\"><path d=\"M0 11l2-2 5 5L18 3l2 2L7 18z\"\/><\/svg>\r\n        RFQ clarity checked to reduce back-and-forth and avoid missing critical notes\r\n      <\/div>\r\n    <\/div>\r\n\r\n    <p class=\"sunhy-review-daily\">\r\n      <strong>What I work on daily:<\/strong> reviewing drawings and project specs, supporting engineer-to-engineer questions,\r\n      resolving fit-up and mating issues, and aligning machining\/weld-prep decisions so production and quoting stay consistent.\r\n      (Yes\u2014torque and fit-up notes get plenty of attention.)\r\n    <\/p>\r\n\r\n    <div class=\"sunhy-review-actions\">\r\n      <a href=\"mailto:raymon@sunhy.com?subject=Technical%20Question%20-%20Weld%20Neck%20Flanges\" class=\"sunhy-btn-primary\">\r\n        Ask a Technical Question\r\n      <\/a>\r\n\r\n      <a href=\"https:\/\/www.linkedin.com\/company\/sunhy-pipe-fittings\/\" target=\"_blank\" rel=\"nofollow noopener noreferrer\" class=\"sunhy-btn-ghost\">\r\n        <svg style=\"width:14px;height:14px;fill:currentColor;\" viewBox=\"0 0 24 24\" aria-hidden=\"true\">\r\n          <path d=\"M19 0h-14c-2.761 0-5 2.239-5 5v14c0 2.761 2.239 5 5 5h14c2.762 0 5-2.239 5-5v-14c0-2.761-2.238-5-5-5zm-11 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class=\"elementor-field-label elementor-screen-only\">\n\t\t\t\t\t\t\t\tMessage\t\t\t\t\t\t\t<\/label>\n\t\t\t\t\t\t<textarea class=\"elementor-field-textual elementor-field  elementor-size-md\" name=\"form_fields[message]\" id=\"form-field-message\" rows=\"3\" placeholder=\"Please specify the flange type (e.g., Slip-On, Blind) and the required standard\/material\/rating (e.g., EN 1092-1, DIN, ASME B16.5, 316L, 300#).\"><\/textarea>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-type-recaptcha elementor-field-group elementor-column elementor-field-group-field_58105f7 elementor-col-100\">\n\t\t\t\t\t<div class=\"elementor-field\" id=\"form-field-field_58105f7\"><div class=\"elementor-g-recaptcha\" data-sitekey=\"6Le04PwrAAAAABSse9pF22Cy1dSMz4P8HEf9l7O5\" data-type=\"v2_checkbox\" data-theme=\"light\" data-size=\"normal\"><\/div><\/div>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<div class=\"elementor-field-group elementor-column elementor-field-type-submit elementor-col-100 e-form__buttons\">\n\t\t\t\t\t<button class=\"elementor-button elementor-size-md elementor-animation-grow\" type=\"submit\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Submit<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Weld Neck Flanges \u2022 High-Integrity Connections Stainless Steel Weld Neck Flanges Manufacturer for High-Pressure Service Forged weld neck flanges for high-pressure, thermal cycling, and vibration-sensitive piping. Available to ASME B16.5 \/ B16.47, EN 1092-1, and JIS standards with 3.1 MTR, PMI, dimensional inspection, and project-specific NDT. Standards ASME B16.5 (NPS 1\/2\u201324) \u2022 ASME B16.47 (NPS [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":34,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-997","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/sunhyings.com\/it\/wp-json\/wp\/v2\/pages\/997","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sunhyings.com\/it\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sunhyings.com\/it\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sunhyings.com\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sunhyings.com\/it\/wp-json\/wp\/v2\/comments?post=997"}],"version-history":[{"count":457,"href":"https:\/\/sunhyings.com\/it\/wp-json\/wp\/v2\/pages\/997\/revisions"}],"predecessor-version":[{"id":13732,"href":"https:\/\/sunhyings.com\/it\/wp-json\/wp\/v2\/pages\/997\/revisions\/13732"}],"up":[{"embeddable":true,"href":"https:\/\/sunhyings.com\/it\/wp-json\/wp\/v2\/pages\/34"}],"wp:attachment":[{"href":"https:\/\/sunhyings.com\/it\/wp-json\/wp\/v2\/media?parent=997"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}