... Quality Galvanized Steel Pipe Thickness:0.5-2.5mm O.D:1.-114mm Application:Petroleum, gas water pipe, construction, 1,Name : ... Galvanized steel round pipe 2,Standard :GB, ASTM, JIS, ... , Q345,etc 7,Welded line pipe:ERW8,Application:Petroleum, gas water pipe, construction, chemical fertilizer pipe, fluid pipe9,MOQ:According to the ...