ASTM A182 and ASME SA182 are widely recognized specifications for forged or rolled alloy-steel pipe flanges, forged fittings, valves, and related parts designed for high-temperature service. These standards apply to materials including carbon steel, alloy steel, and stainless steel, which are commonly required in power generation, oil & gas, and chemical industries. https://archpipes.com/news/company-blogs-en/asme-sa182-astm-a182-flanges-and-forged-fittings-jizhong-supplier/