Hebei Industry Chiho large plate flat welding flange (HG20593, GB / T9119, JB / T81): easily obtained, high pressure steel flanges, create a simple, low cost, widely used; but less rigid, and therefore can not be used there chemical process piping systems and high supply and Alloy Steel Flanges, Alloy Steel Flanges flammable, explosive and high vacuum requirements, extremely hazardous situations. sealing surface with flat-screen and projection surface. Large plate welded flange method Portland applicable standardization and Industry HG20593-1997 steel flange Click image processing, GB GB / T9119-2000, machine standard JB / T81-94 Hebei Chiho pipe in the pipe flange industry standards there should be no convex welded flange (M ), only the sudden face welding flange (RF). Are two different names. Influenza in the pressure vessel welded flange, welded flange B in the form of convex and concave face seal. The pressure in the pipe flange is generally concave face seal ≥4.0Mpa form will be used, and in the Ministry of Chemical Industry welding flange standards (HG) and the Department of Mechanical welding flange standard (JB / T81-94) in The maximum pressure is 2.5MPA. Although there 4.0MPA flat welding flange in GB9119-2000, but its dimensions are with all the specifications of the Ministry of Chemical 2.5MPA welded flange of the same size. Click image processing steel flanges, alloy steel flanges, Hebei Chiho Chiho by Hebei Industry Co., Ltd. Hebei Chiho Pipe Co., Ltd. (www.hbqh628.com) (www.hbqh628.com) strong, credible, Cangzhou in Hebei forging industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Hebei Chiho into the brilliant and you work for a better future!