... , YELLOW PAINT, ISO QUALIFIED, HTHIRED PARTY INSPECTED, HIGH QUALITY, PROMOTE DELIVERY For forged steel flanges, we supply per all foreign standards like ASME ... metric system. The materials of the flange contain carbon steel, alloy steel, stainless steel and high alloy steel. The size range is from 1/2 to ... pressure equipment or pipeline engineering per ASME and API codes. HIGH QUALITY FLANGE