Our production scope includes seamless carbon steel pipe ASTM A106/A53 Grade B, line pipe API 5L PSL1/PSL2 Grade B,X42~X65, OCTG casing and tubing API 5CT J55~P110, Drill pipe API 5DP E75,X95,G105,S135, Boiler tube ASTM A179/A192/A210, Alloy steel tubes ASTM A213 T5/T9/T11/T22, ASTM A335 P11/P12/P22/P91, AISI/ASTM A519 4118,4130,4135,4140,5140,etc.