hot-dipped galvanized steel pipe 1) material:Q195, Q215, Q235, Q345 2) O.D: ... 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 ... -corrosion and high-temperature resistant with black painting 3.All the production process are made under the ISO9001:2000 strictly. hot-dipped galvanized steel ...