... : equal size:1/2''-24'' thickness: SCH20, STD, SCH40, XS, SCH80, XXS (for ANSI) carbon steel pipe fittings1) Carbon steel, alloy ... on 3) Varieties: SGP, DIN, GOST, STD, SCH20, SCH40, SCH80, SCH160 etc.4) Standard: ANSI B16.9 / 16.28, ASTM A53/A106 ... availableAll the production process are made according to ISO9001:2008 sch80 carbon steel elbows