... FLANGES, YELLOW PAINT, ISO QUALIFIED, HTHIRED PARTY INSPECTED, HIGH QUALITY, PROMOTE DELIVERY For forged steel flanges, we supply per ... all types. The pressure rating is from Class 25LB to Class 2000LB in inch system and from PN0.25MPa ... contain carbon steel, alloy steel, stainless steel and high alloy steel. The size range is from 1/2 ... pipeline engineering per ASME and API codes. HIGH QUALITY FLANGE