... Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and SeamlessASTM A519 Seamless Carbon and Alloy Steel Mechanical Tubing ... : Grade A, Grade B, Grade C, Type F, Type EASTM A519: 1010-1045, 4130-4142, 5135GB/T8162: 10, 20, 35, ... ; S275J0H, S275J2H; S355J0H, S355J2H; S275NH, S355NH; S275NLH, S355NLHSizeOuter Diameter: Hot finish: 2" - 30",Cold drawn: 0.875" - 18"Wall Thickness ...