GOST 12820-80 Carbon Steel Flanges are widely used in Russia and provide stable, strong solutions for the piping systems of industries. According to GOST 12820-80, the flanges are produced, which are suitable for a high-pressure and high-temperature application. This makes the connections quite tight and leak-free in applications like oil and gas, chemical processing, and power genera... https://www.ganpatmetal.com/carbon-steel-ASTM-A105-flanges-manufratures-expoters-suppliers-stockists.html