Application system of flange standard in Chemical Industry Department
Flange standard: both continental and American flanges are included.
1, Continental flange: (HG20592 ~ HG20605).
Pressure levels: PN, 0.25, 0.6, 1, 1.6, 2.5, 4, 6.3, 10, 10, 16, 25 and so on.
Nominal diameter: DN10~DN2000mm.
Flange type: plate welding, butt welding, weld neck with neck, integral, socket welding, threaded, butt welding ring loose, loose, flat ring lining flange, flange cover 10.
Sealing surface type: bump, concave and convex surface, tongue and groove surface, ring connecting surface, full plane and so on 5 kinds.
It can be used in conjunction with the JB valve.
2, American flange standard (HG20615-HG20626)
Nominal pressure: PN2.0, PN5.0, PN11.0, PN15.0, PN26.0 and PN42.0 6 pressure levels.
Nominal diameter: DN15~DN1500.
Hubbed flange type: belt, welding neck flange, overall, socket welding, threaded sleeve, 6.
Sealing surface type: bump, concave and convex surface, tongue and groove surface, ring connection surface, full plane and so on 5 kinds.
The application standard system of pressure pipeline in chemical industry is also a relatively complete standard system, and has undergone several years of production practice test, and has a mature use experience. Because it has large diameter, "series" and "small diameter series", "European" and "American" flange flange two series, so the use of a wide range, it can be used in conjunction with the foreign ANSI, DIN, ISO and other standards, but also with domestic GB, SH, JB mark with the use of quasi. Common standards in application standard system of chemical industry
Sales of HG20592~20605 steel pipe flanges (European system)
Sales of HG20615~20626 steel pipe flanges (American system)
Gaskets for steel pipe flanges HG20606~20612 sales (European system)
Gaskets for steel pipe flanges HG20627~20633 sales system (America