Specialty Stainless Steel Flanges
Overview of non-standard flange types typically used for heat exchangers, pressure vessels, and metering systems.
Specialty Types Guide
Below are the critical flange types used when standard ASME B16.5 connections cannot meet specific alignment, isolation, or pressure boundary requirements.
Tube Sheet Flanges
Precision CNC-drilled sheets for heat exchangers and boilers. Drilling patterns and tolerances are critical RFQ inputs.
Pressure Vessel Flanges
Body and nozzle flanges for ASME Section VIII vessels. Usually manufactured based on custom drawings.
Orifice Flanges
Used for differential pressure flow measurement. Supplied as matched pairs with jack screws and tappings.
Spectacle Blinds / Spades
Positive line isolation for safety during maintenance. Includes figure-8 blanks, spades, and spacers.
Anchor Flanges
Restrains axial thermal expansion forces in pipelines. Typically embedded in concrete thrust blocks.
Swivel Flanges
Allows the bolt ring to rotate for easy alignment. Essential for offshore and subsea tie-in operations.
| Type | Primary Function | Typical Application | Critical RFQ Input |
|---|---|---|---|
| Tube Sheet | Heat transfer interface | Heat Exchangers | Drill Pattern / Tolerances |
| Pressure Vessel | Pressure boundary | ASME VIII Vessels | Drawings / Nozzle Details |
| Orifice | Flow measurement | Metering Skids | Tap Size / Bore Schedule |
| Spectacle Blind | Line isolation | Maintenance Safety | Line Class / Face Type |
| Anchor | Thrust restraint | Long Pipelines | Axial Load / Temp |
| Swivel | Bolt alignment | Subsea Tie-ins | Mating Flange Specs |