Cangzhou Bohai Pipe Co., Ltd. 20 # flange large forging large flange screw connection points (wire tapping) flange and welding flange low pressure small diameter wire connected flat welding flange 20 # flanges, large diameter high pressure and low pressure are use of welded flanges, the thickness of different pressures and flange connecting bolts are of different diameters and number, according to different levels of pressure, there are different flange pad material, asbestos pad from the low pressure and high pressure to the metal pads are asbestos mat. 1. Material classified carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum, plastic, argon Ge Lek, ppc, etc. 2. production methods can be divided into forged flanges, casting flanges, welded flanges 20 # flange DN500, rolling flange (large number) 3. manufacturing standards can be divided into GB (Ministry of Chemical Industry, Petroleum standard, electricity standard), American Standard, the German standard, Japanese standard, the Russian standard, etc. Large welding flange welding can be divided according to the different major and large welded flange welded flange Cangzhou Bohai Pipe Co., Ltd. professional manufacturer 20 # flange nominal sch5s, sch10s 20 # flange, sch20s, sch30s, sch40s etc. Manufacturing standards: GB 20 # flange DN50, American standard, the Russian standard, Japanese standard and other materials: 201,304.316.316L.0Cr18Ni9.321.202 etc. Uses: Widely used in water conservancy, electricity, power plants, pipe fittings, industry, pressure vessels, etc. Connection: flange nut, bolt connection. 20 # flange DN50, professional forging (online consultation), 20 # flange provided by Pipe Co., Ltd. Cangzhou Bohai. Cangzhou Bohai Tube 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.