GOST Standard Flanges are a set of flanges that are governed by the GOST standard, which is a standard system from Russia. The flanges can be of different shapes, sizes, pressure classes and grades. There are welding neck flanges, blind flanges, plate flanges, butt weld flanges and so on. The GOST 12821 80 flange belongs to one of many pressure classes which range from class 150 to 2500 which correlate to their pressure capacities in lbs.
GOST Standard Flanges
There are also pressure ratings of these flanges in PN6 through PN160MPa. The flanges are in threaded, reducing, spectacle, SORF, WNRF, BLRF and SWRF types. They can be coated with anti-rust paint, oil black paint, yellow transparent and zinc plate. The GOST 12815 Pipe Flange can be in different dimensions according to standards B16.5, B16.47 or others. The GOST 33259 Flange can be made up of stainless steel, duplex steel, super duplex steel, nickel alloys and copper alloys.
There are low temperature flange, high yield flange, carbon steel flange and alloy steel flange in this standard. The Flange GOST 12820 is a plate flange that belongs to the GOST standard. The applications include refineries, gas processing plants, petrochemicals, hydrocarbon industry, fertilizer industry, paper and pulp industry and many others.
GOST 12815 Pipe Flange Standard Specifications
From 1/2 inch (i.e. 15 NB) upto 48 inch (i.e. 1200NB)
It is a Russian Flanges which consist of Welding neck Flange (GOST12821-80), Plate Flange (GOST12820-80), Blind Flange (GOST12836-67) and Butt-Welded Flange (GOST12821-80). The Pressure Classes for this flanges are available from PN0.6Mpa upto PN160Mpa.