Cangzhou Bohai Pipe Fittings Co., Ltd. 20 # flange welded flange lap Flanges: in fact, exactly the same lap sliding flange flange, unless it is a radius between the hole and the flange race. This is necessary to accommodate the radius of the overlapping flange stub end. Typically, at the end of lap lap stub mating flange and the assembly system together. The socket welding flange is a similar sliding flange, unless it has a hole and anti-hole size. Counter bore little beer than match OD pipe loose set of 20 # flange, so that the pipe is inserted into the flange similar sliding flange. In the smaller hole diameter is the same as the ID of the same matching pipe. Limitation is built into the hole, as a shoulder sleeve designed for pipe stays at the bottom. This eliminates any traffic restrictions in the use of socket welding flanges. Flange Standard: HG20592-2009 (PN series) \ HG20615-2009 (Calss series) Pipe Fittings Co., Ltd. Cangzhou Bohai forging large 20 # flange large flange points threaded connection (wire connected) flange and welding flange small diameter low pressure. silk flange, high pressure and low pressure large diameter welding flanges are used, the thickness and diameter of the bolt connection and the number of different pressure flange is different according to different levels of pressure, the flange gasket 20 are also different materials marine # flanges, from low pressure asbestos pads, high pressure asbestos pads to the metal pads are. 1. Material classified carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum, plastic, argon Ge Lek, ppc, etc. 2. to production methods can be divided into the production of forged flanges 20 # flanges, casting flanges, welded flanges, rolled flange (large number) 3. manufacturing standards can be divided into GB (Ministry of Chemical Industry Standard, Standard Oil, Electricity Standard), American Standard 20 # flange, German standard, Japanese standard, the Russian standard and other large welded flanges according to different welding methods can be divided into large and large welded flange welded flange forging 20 # flange. | Cangzhou Bohai (certified) | 20 # Flange Co., Ltd. Qingdao provided by Cangzhou Bohai fittings. Cangzhou Bohai Pipe Fittings Co., Ltd. (www.czbh628.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 customer needs. Cangzhou Bohai leadership with the staff warmly welcome all inquiries negotiations to create a better future Cangzhou Bohai.