Carbon steel head size standard GB American Standard British standard and non-standard products. Reducing carbon steel pipe is to buy Chiho Pipe Co., Ltd. Hebei. Ministry GD0506 ~ 0507 standard pressure vessel supporting flange, tube sheet corresponding standards: JB / T4700 ~ 4707-2000 implementation of national standards (GB / T9112-2000), Department of Mechanical Standard (JB / T81-1959, JB / T74- 1994), petrochemical department standards (SH3406-1996), marine standard GB / T10752-1999, Ministry of Chemical Industry Standard (HG / T5010-1958, HG / T20592-2009), and so on. Forged flange material exports ASTMA105 meet US standards. These are the national standard steel pipe reducer. Hebei Chiho Pipe 304 concentric reducer size tolerances shall comply with Table 4.2.2-3 of. Diameter pipe, also known as head size, used to connect pipes of different sizes, which are generally divided into concentric and eccentric reducer Two pipe diameter when diameter pipe stand up after the two-port is projected concentric circles, it is called concentric reducer, eccentric reducer cylindrical projection is within the small circle cut in 304 concentric size head The manufacturing process of the most simple, with a wall thickness of the tube as thick rough, expand or end with an equal diameter pipe wall thickness as a rough, narrow end of the aperture can be. Whether flaring or necking diameter steel pipe dn80, is generally used to suppress mold. The current domestic commonly used to suppress progressive die eccentric eccentric reducer reducer dn80 steel manufacturers, produced by this process three more eccentric reducer reducer dn80 steel manufacturer, will end in the eccentric head serious gaps, wall from tumors, uneven thickness and oval and so on. When you press truncated concentric reducer instead of a truncated resulting structure eccentric reducer, because oblique section is not round but oval face surface will exist between the wrong end and straight edges, the problem can not be fully engaged. If the introduction of new technology to suppress carbon reducers dn80 wholesalers, namely first with concentric mold pressed the concentric reducer, concentric reducer good then pressed into a mold pressing eccentric eccentric desired cosmetic differences diameter pipe, its inner and outer surfaces smooth, flat head, uniform thickness, roundness qualified, the use of less carbon-diameter pipe dn80 manufacturers of raw materials, Jiaxing steel diameter pipe dn80, Hebei Chiho Chiho from Hebei Pipe Co., Limited. Chiho Pipe Co., Ltd. Hebei (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 and you hand into the brilliant, for a better future!