Cangzhou Bohai Pipe Fittings Co., Ltd. 20 # flange flange (flange joint) by a pair of flanges, gaskets and a number of bolts and nuts. Gasket is placed between the two flange sealing surface, tighten the nut, gasket surface pressure over the deformation reaches a certain value, and fill the sealing surface uneven, the connection does not leak tight. Flange connection is a detachable connection. According to the connected components can be divided into the container flange and pipe flange; by structure type 20 # flanges, with an integral flange, loose flanges and threaded flange. Common integral flange welded flange and have welded flange. Less rigid welded flange, and apply pressure p≤4MPa occasions; also known as high-neck flange welded flange, greater rigidity, suitable for high pressure and temperature applications. Type flange sealing surface in three ways: planar sealing surface for the pressure is not high, medium toxic occasions; uneven offer 20 # flange sealing surface for higher pressure situations; tongue and groove sealing surface for flammable, explosive, toxic medium and high pressure situations Cangzhou Bohai Pipe Fittings Co., Ltd. specializes in producing 20 # flange forging forging forging called the model, the blank heated placed on a fixed die forging equipment in the forging of. 1. The basic process forging forging process: cutting, heating, pre-forging, the final forging, red skin, trimming, quenching, shot peening. Common processes are upsetting, stretching Hebei 20 # flange, bending, punching, forming. 2. forging equipment commonly used equipment forging hammer forging, hot forging presses, flat forging presses and other machines and friction. More simply butt 20 # flanges, forged flanges better quality, typically by forging production, fine crystal structure, high strength, and of course the price is expensive. Whether casting or forging flange flange flange are all common manufacturing methods, see the strength requirements needed to use part of, if not ask, you can also choose the system turning flange. GB 20 # flange _ Cangzhou Bohai (certified) _20 # Flange Co. 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.