Two standard reference flange standard what is the standard? What is the difference between the national standard and the national standard?
Two standard flange without standards, such as wall thickness to slightly worse, there are some errors in size, in general, can still use, but compared with GB flange, it must be unqualified
A flange is a part that is connected between the pipe and the pipe, used for the connection between the ends of the pipe. It is also used for the flange on the entrance and exit of the equipment. It is used for the connection between the two devices, such as the reducer flange. Flange connection or flange joint means that the flange, the shim and the bolt are mutually connected as a group of three detachable sealing structures.Pipe flanges are flanges used for piping in pipe installations. They are used on equipment and refer to the entrance and exit flanges of the equipment. The flange is lined with bolts to secure the two flanges.Gaskets for gaskets between flanges. Sub threaded flange connection (threaded connection), flange welding flange and flange clamp. Flanges are used in pairs. Low pressure pipes can be made of wire flanges and welded flanges with pressures of more than four kilograms.Add a gasket between the two flanges and secure with bolts. Different pressure flange thickness is different, they use the bolt is also different.
Two standard flanges are flanges that are not produced in standard sizes.Production standard:GB: GB/T9112-2010 (GB9113, 1-2010 ~ GB9123 = 4-2010)Ministry of chemical industry standards: HG5010-52 ~ HG5028-58, HGJ44-91 ~ HGJ65-91, HG20592-2009 series, HG20615-2009 seriesMechanical department standard: JB81-59 ~ JB86-59, JB/T79-94 ~ JB/T86-94, JB/T74-1994Pressure vessel standard: JB1157-82 ~ JB1160-82, JB4700-2000 ~ JB4707-2000, B16.47A/B, B16.39, B16.Note:"GB" means national standards;HG refers to the chemical industry standards;HGJ refers to the construction procedure of chemical industry;JB refers to the machinery industry standards.Flanges (Flange), also called flanges, flanges, or flanges.
