Welding neck flange ASTM A105 ASME B16.5 is American standard carbon steel flange. It is widely used for the connection of steel pipes and pipe fittings. Welding neck flanges are available in a variety of sizes, pressures and sealing face.
Size: 1/2 inch to 24 inch for standard ASME B16.5, if above 24 inch the standard should be according to ASME B16.47 series A or series B.
Pressure: Class 150, Class 300, Class 600, Class 900, Class 1500 and Class 2500.
Sealing face: RF (raised face), RTJ (ring joint face), TG (tongue and groove face) etc.
The specification of Welding Neck Flange ASTM A105 ASME B16.5
The surface treatment of welding neck flange
The surface treatment of welding neck flange includes black painting, yellow painting, anti-rust oil, and epoxy. Generally if the customers don’t have special request for the surface, anti-rust oil is commonly used.
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