Cangzhou Bohai Pipe Fittings Co., Ltd. 20 # socket welding flange socket welding flange (SW) Socket Welding Flange sealing surface forms: raised face (RF), convex surface (MFM), tongue and groove (TG), ring joint face (RJ) Material: Carbon Steel (Carbon Steel): ASTM A105,20 #, Q235,16Mn, ASTM A350 LF1, LF2 CL1 / CL2 butt 20 # flange, LF3 CL1 / CL2, ASTM A694 F42, F46, F48 20 # flange manufacturers, F50 20 # flange prices, F52, F56, F60, F65, F70; stainless steel (Stainess Steel): ASTM A182 F304,304L, F316,316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321,18-8; steel (Alloy Steel): ASTM A182 F1, F5a, F9, F11, F12, F22, F91, A182F12, A182F11,16MnR, Cr5Mo, 12Cr1MoV, 15CrMo, 12Cr2Mo1, A335P22, St45.8 / Ⅲ, 35CrMoV, 45CrMo and other manufacturing standards: ANSI B16.5, GB / T9117.1-2000-GB / T9117.4-200, HG20592-2009 (PN series) \ HG20615-2009 (Calss series) Cangzhou Bohai Pipe Fittings Co., Ltd. 20 # Flange cover method Langaifalan cover, also known as blind flanges, intermediate flange without holes for pipes sealed with a plug. Species form large sealing surface, with a flat, convex, concave and convex surfaces, tongue and groove, ring joint face. Sealing surface: flat (FF), raised face (RF), convex surface (MFM), tongue and groove (TG), ring joint face (RJ) 20 # forged flanges _20 _ Cangzhou Bohai # flange fittings from Cangzhou Bohai Limited. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) strong, credible, and other industries in Hebei Cangzhou tee accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Cangzhou Bohai and you hand into the brilliant, for a better future!