... :Q195, Q215, Q235, Q345 2) O.D:20-219mm 3) W.T:0.8-8mm 4) Length: 6000mm Hot-dipped galvanized steel ... tube1)material:Q195, Q215, Q235, Q3452)O.D:20-219mm3)W.T:0.8-8mmCommoditygalvanized steel pipeOuter diameter20~219mmWall thickness0.8~8mmLength6000mmStandardASTM ...