(6) Socket welding flange (SW)
Socket welding flange
Socket Welding Flange
Socket welding flange
Socket welding flange
Sealing surface form: raised surface (RF), concave-convex surface (MFM), tongue and groove surface (TG), ring connection surface (RJ)
Material: Carbon Steel: ASTM A105, 20#, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65 ,F70;
Alloy Steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ, 35CrMoV, 45CrMo, etc.
Manufacturing standards: ANSI B16.5, GB/T9117.1-2000—GB/T9117.4-200, etc.
(7) Threaded flange (TH)
Nominal diameter of threaded flange: DN8～DN100 Working pressure: 1.0～2.5 (MPa) Plate type threaded flange material: stainless steel, carbon steel, alloy steel.
Threaded flange use: suitable for thread locking and sealing of industrial and civil pipes such as fire fighting, gas, cold and hot water, air conditioning, air pressure pipes, oil pipes, instruments, hydraulic pipes, etc.
Flange cover (BL)
Flange cover, also called blind flange, is a flange without a hole in the middle, which is used to seal pipeline plugs. There are many types of sealing surfaces, including flat, convex, concave-convex, tongue-and-groove surfaces, and ring connection surfaces.
Sealing surface: flat surface (FF), raised surface (RF), concave and convex surface (MFM), tongue and groove surface (TG), ring connection surface (RJ)
Production materials:
Carbon Steel: ASTM A105, 20#, Q235, 16Mn, ASTM A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2, ASTM A694 F42, F46, F48, F50, F52, F56, F60, F65, F70 ；
Stainless Steel: ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321, 18-8;
Alloy Steel: ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8/Ⅲ.