Pressure vessel is the most widely used petrochemical industry equipment, is one of the major means of production and petrochemical industry. Due to mounting internal process requirements and equipment, maintenance needs, often need to set the vessel pressure vessel flange (such as the common shell and tube heat exchangers, reactors, towers, filters, etc.). Pressure vessel flange connection flange ring press is divided into: the overall flange, loose flange and any flange. China's most popular JB / T4701-4703 standard pressure vessel flange There are three types: alpha-welded flange, welded flange and beta-necked 20 # flange welded flange offer, including influenza A, B Flat welding flange belong to any flange. Flanges and gaskets, fasteners, collectively referred to as flange joints, flange joints are used in engineering design is very common, covers a very wide one component, but also the process of engineering design and the use of key parts prone to problems . Flange joint design is an important part of the pressure vessel design. In the selection of standard influenza flange and non-standard computing alpha flange, the designer selection of materials unreasonable phenomenon is more serious 20 # flange, using B flat welding flange welded flange instead of influenza and even the long-necked flat case welding flange is greater, resulting in unnecessary waste. So flat welding flange 20 #, it is necessary to discuss the selection and calculations are often used for influenza A flat welding flanges. Cangzhou Bohai Pipe Co., Ltd. specializing in the production of 20 # flange tube sheet tube sheet is widely used in shell and tube heat exchangers, boilers, pressure vessels, steam turbines, large central air-conditioning industry. Mainly used in chemical container, such as a shell and tube heat exchangers, pressure vessels, boilers, condensers, central air conditioning, evaporators, desalination, play a supportive role in the fixed tube, metal material so that it not only has a strong rigid, and has a large thermal conductivity. Flat welding flange 20 # 2015 Price (online consultation), Shandong 20 # Flange Co. provided by Cangzhou Bohai tube. 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.