Cangzhou Bohai Pipe Co., Ltd. specializes in manufacturing up to 20 # flange planar large-diameter flange of the amount of the application, the other two methods of large-diameter flange in use is relatively common. Large-diameter flange includes a wide variety of types and models, welded steel flanges for flange and pipe welding counterparts, mainly used in welding technology, the performance of good use of features and performance, reasonable structure, greater strength and stiffness 20 # flange DN50, withstand high temperature and pressure, and repeated bending and temperature fluctuations, reliable sealing, nominal pressure of 0.25 ~ 2.5MPa use of large-diameter flange sealing surface irregularities. Large-diameter flange main application environment is suitable, depending on the situation to determine the need to ensure that the specific use of rolled flanges value and performance, withstand high temperature and pressure. Cangzhou Bohai Pipe Fittings Co., Ltd. 20 # Flange connections (flange joint) by a pair of flanges, a gasket and a number of bolts and nuts. Spacer placed between the two flange sealing surface, tighten the nut, the pressure over the gasket surface 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, with integral flanges, loose flanges and threaded flange. Common integral flange having welded flange and welded flange. Less rigid flat welding flange, for 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 with a diameter of 20 # flat welding flanges for the pressure is not high, medium nontoxic occasions; uneven sealing surface for higher pressure situations; tongue and groove sealing surface for flammable, explosive, poisonous medium and high pressure of the occasion 20 # flange DN50, professional forging (online consultation), # 20 by Cangzhou Bohai Flange Co. fittings. 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.