... Zinc-coated,welded an seamlessASTM A53/A53MA, BStandard specification for Seamless Carbon Steel Pipe for high temperature ... serviceASTM A106A, B, CStandard specification forSeamless Carbon Steel Boiler Tubes for High-PressureServiceASTM ... in Rounds and Shapes ASTM A500A, B, C, DStandard specification forHot-Formed Welded andSeamless Carbon SteelStructural TubingASTM A501A501Alloy ...