Cangzhou Bohai Tube Co. specializing in the production of 20 # Flange protective cover is mainly used in all industrial corrosion flange connection. Flange protection of the product used to protect the head flange surface (convex or circular connector). Double end studs and gaskets from corrosion. This product is suitable for 316 ss stainless steel and non-metallic (plastic) with a diameter of 20 # flat welding flange, its manufacturing size from ? "to 144" ANSI, API, and AWWA flange diameter. Flange head system combined with the flange fillers can protect applications in harsh environments. Cangzhou Bohai Pipe Fittings Co., GB 20 # flange weld neck flange Loose ring Flange Loose ring with butt weld neck flange Loose ring flange plate flat welding ring Loose plate flange plate turned loose flange locking device after another in order to meet the needs of welded 20 # flanges, with shank with holes, these holes can be loosened when the bolt is not subject to vibration. Some did not threaded flange bolts To meticulous rod, called a thin rod flange bolts. This flange bolts favor by variable force coupling. with special high strength bolts on steel. head will become bigger and more. There are also changes in the size of hot-dip galvanized steel bar is the molten matrix metal and iron alloy layer produced by the reaction. Flange Standard: HG20592-2009 (PN series) \ HG20615-2009 (Calss series) 20 # flanges offer, 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.