Flat flange

This standard applies to flat steel welded flanges of pipelines and connecting parts, as well as to connecting flanges of fittings, connecting parts of machines, devices, nozzles of apparatuses and tanks for nominal pressure PN from 0.1 to 2.5 MPa (from 1 to 25 kgf / cm2) and the temperature of the medium is from -70 ° С to + 300 ° С. According to this standard, steel flat welded flanges with a diameter from 10 mm to 1200 mm are made of carbon and low alloy steel, from heat-resistant steel grades, as well as stainless steel grades. The flat flange of GOST 12820 80 can be made according to your size!