Cangzhou Bohai Pipe Fittings Co., Ltd. specializes in the production of 20 # Flange basic standards GB: GB / T9112-2000 (GB9113 · 1-2000 ~ GB9123 4-2000?) American Standard: ANSI B16.5 Class150,300,600,900 , 1500 (WN, SO, BL, TH, LJ, SW) Japanese standard: JIS 5K, 10K, 16K, 20K (PL, SO, BL, WN, TH, SW) German standard: DIN2573,2572,2631,2576, 2632,2633,2543,2634,2545 (PL, SO, WN, BL, TH) Ministry of Chemical Industry Standard: HG5010-52 ~ HG5028-58, HGJ44-91 ~ HGJ65-91, HG20592-2009 (PN series) \ HG20615- 2009 (Calss series) machinery of the standard: JB81-59 ~ JB86-59, JB / T79-94 ~ JB / T86-94, JB / T74-1994 Pressure Vessel Code: JB1157-82 ~ JB1160-82, JB4700-2000 ~ JB4707-2000 Applications: boilers, pressure vessels, petroleum, chemical, shipbuilding, pharmaceutical, metallurgy, machinery, food and other industries. 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 20 # flanges, F46 20 # flange quote , F48, F50 20 # flange manufacturers, 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) 20 # 20 # flange welded flange _ _ Cangzhou Bohai (Certification Merchant) Ltd provided by Cangzhou Bohai fittings. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.com) is specialized in the "elbow, flanges, reducers, hangers, flanging, intubation, welded flanges, pipe wear" business, Companies adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: Zhangsong Wei.