Stainless steel flat welding flange with neck

Product Name: Stainless steel welding neck flange Product Category: Flange Description weld neck flange sealing surface plane (FF), raised face (RF), convex surface (MFM), tongue and groove (TG), ring joint face (RJ) production materials Carbon (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; flange for standard German standard DIN2630-2638, Ministry of Chemical Industry HG20595-1997, GB GB/T9115.1-2000-GB/T9115.4-2000, American Standard ANSI B16.5, Chemical Ministry HG20617-1997, GB GB/T9115.1-2000-GB/T9115.4-2000 stainless steel (Stainess Steel): ASTM A182 F304, 304L, F316, 316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti ,321,18-8; alloy steel ( Alloy Steel): ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11, 16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8 / Ⅲ;