ASTM-A53 galvanized steel pipe 1)WT:0.8-7 2)OD:19-457 3)length:6m or acc to requirement 4)zinc ... coating:300g/m2 ASTM-A53 galvanized steel pipe1)WT:0 ... pipe/GI pipe Thickness0.6-16 mmOuter diameter19-457mmLengthMax 16metersStandardBS, ASTM , ASME , EN , DIN ,GB, JISMaterialQ195 , Q215 ,Q235 , Q345ApplicationPetroleum, power,gas ...