These flanges are forged products manufactured from chromium-molybdenum alloy steel that offers superior strength, resistance to heat, and exceptional durability. They are part of ASTM A182 standard which covers forged or rolled alloy steel pipe flanges, fittings, and valves designed for high-temperature service. At Metafit Piping Industries, we provide flanges that comply with ANSI, ... https://www.mfpind.com/alloy-steel-astm-a182-f9-flanges-manufacturers-exporters-suppliers-stockists.html