YongHui Steel Pipe Co.,Ltd Contact:Ms Qiao Application: Structural tube, mechanical Tube, construction tube, automobile axle tube, hydraulic prop tube, boiler tube, tubes for conveyance of fluid, tubes for structures of pipelines, vessels and equipment. Hot Dipped Galvanized Seamless Tube Range of Galvanized Seamless Pipe: 1/2' to 8' Under 2': plain ends Above 2': bevelled ends Standards of Galvanized Seamless Pipe: ASTM A106/ASTM A53 Petroleum Casing and Tubing specification: O. D: From 76mm(3") to 133mm(5.3"); W. T: From 8mm(0.3") to 30mm(1.2"); 3, Standard: GB/T 8162--1999, ASTM A53, ASTM A106, Q235(16Mn) ASTM A53: Goods descriptions