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, LF3 CL1 / CL2, ASTM A694 F42, F46 # 20 welded flange, F48, F50, F52, F56, F60, F65, F70; stainless steel (Stainess Steel): ASTM A182 F304,304L, F316,316L, 1Cr18Ni9Ti, 0Cr18Ni9Ti, 321,18-8; alloy (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 flat welding flange ring loose flanges with weld ring loose flange plate flange piece is active, generally supporting the plumbing fittings (expansion joints on the most common), expansion joints on both ends of each piece flange when the manufacturers factory directly with the project pipeline, equipment bolted. The purpose of using a flat welding flange ring set loose in order to save material is generally flat welding flange 20 #, its structure is divided into two parts, the production of 20 # flanges, tubes and pipes connected to one end section 20 # flange, made a head flange , the flange portion of the sleeve cuffs. Flanges low grade materials, and the use of the pipe section and the pipe of the same material, to achieve the purpose of saving material. Direct 20 # flanges, Cangzhou Bohai (certified), 20 # Flange Co. provided by Cangzhou Bohai fittings. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) (www.hbbh628.com) is an industry leader in Cangzhou, Hebei, three, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Cangzhou Bohai leadership with the staff warmly welcome all inquiries negotiations to create a better future Cangzhou Bohai.