Flanges
Flange selection, material grades, sealing, assembly and inspection.
Flange selection, material grades, face finish, gasket compatibility and joint assembly guidance for engineers and buyers. Browse selected SUNHY technical articles below. Each guide links to its full article and featured engineering image.
Flanges engineering articles
8 selected guides with relevant article images and direct links.
The Ultimate Guide to Joint Integrity: 4 Steps to Zero-Leakage Flange Assembly
Achieving zero leakage in a flanged joint is primarily a workmanship and process-control problem. In the field, the most repeatable results come from a disciplined four-step workflow: (1) verified surface condition and…
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Flange Surface Finish Guide: Ra, Roughness, and Gasket Sealing
Flange surface finish is one of the most important controls in gasket sealing.When engineers discuss flange face finish, they are usually talking about roughness values such as Ra, the serration pattern on the sealing…
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Flange Gasket Selection Guide: How to Choose the Right Gasket for Your Service
Selecting the right flange gasket means matching the gasket material and construction to the media, temperature, pressure, flange face, and bolt load the joint can actually maintain.In real piping systems, most leaks…
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Sourcing Guide: Key Differences Between RF vs FF vs RTJ Flanges
The key differences between RF, FF, and RTJ flanges lie in their sealing surface design, pressure handling, and application suitability.Choosing the right flange face type impacts leakage rates and system reliability.…
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How to Prevent HISC in Subsea Flanges: Materials, CP Control, and Stress Hot-Spots
Hydrogen induced stress cracking in subsea flanges is prevented by controlling three things together: material and microstructure quality, cathodic protection so hydrogen generation stays within a controlled window, and…
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10 Questions to Ask Your Flange & Fittings Supplier Before RFQ
Selecting the right flange & fittings supplier isn’t just a purchase; it’s a strategic decision that shapes the success of your entire project. In my experience, a single delayed shipment or a batch of non-compliant…
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Pipe Fittings vs Flanges: Where Each Component Works Best in Your System
Pipe fittings vs flanges come down to one practical question: do you need a permanent joint, or a joint you can safely open and re-make on demand? Pipe fittings (welded, socket-welded, threaded, or specialty) are the…
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Blind Flange vs Spectacle Blind: Best Isolation for Piping? (Guide)
The main difference between a blind flange and a Spectacle Blind Flange is where they are used and how isolation is achieved.A blind flange is typically an end closure (solid plate, no bore) bolted to a pipe end or…
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