hot-dipped galvanized steel pipe 1) material:Q195, Q215, Q235, Q345 2) ... O.D:20-219mm 3) W.T:0.8-8mm 4) Length: 6000mm Hot ... -dipped galvanized steel pipe,galvanized steel pipe,galvanized steel tube1)material:Q195, Q215, Q235, Q3452)O.D ... are made under the ISO9001:2000 strictly. hot-dipped galvanized steel pipe