Welded flange production standards

As the vessel subject to the nominal diameter and pipe nominal represented by the diameter size is different, so the same nominal diameter of the vessel flange and pipe flanges, they are not the same size, they can not substitute each other. Type of pipe flanges in addition to welding, welding flange, steel flange, cast iron flanges, loose flanges, threaded flange. Standard pipe flanges except GB9119.7-88, commonly used standards: the standards of the Ministry of Chemical Industry HG20592 ~ HG20602-97; the Sinopec standard SH3406-96. Ministry of Chemical Industry standard is divided into the European system, the inter-American system, commonly used in China for the European system. The operating pressure is not high, small diameter, can be used Influenza A flat welding flange, flat sealing surface, gasket materials used asbestos rubber sheet.
Weld neck flange pressure rating, material, having different properties and characteristics, in use, in accordance with certain principles and ways and means to use, it is possible to use in production and processing in accordance with the appropriate standards, to ensure a good value in use and role.valve block
Welded flange pressure rating: 0.6Mpa ~ 32Mpa (150Lb ~ 2500Lb)
The Material: 201.202.301.302.303.304L.309S.310S, 316.316L.317.317L.321.410.420.
The welded flange in the use and production of different production standards, according to the standards of production and use, to ensure the value and role of the welded flange in the actual use.
Production and implementation of the welded flange standard: American standard, Japanese standard, German standard, Italian standards.
Ministry of Chemical Industry, Ministry of Machinery Standard and Pressure Vessel Code.sae hydraulic fittings