... pipe 1) material:Q195, Q215, Q235, Q345 2) O.D:20-219mm 3) W.T:0.8-8mm 4) Length: 6000mm ... ,galvanized steel tube1)material:Q195, Q215, Q235, Q3452)O.D:20-219mm3)W.T:0.8-8mmCommoditygalvanized steel pipeOuter diameter20~219mmWall ... as the pipeline of industrial and civilian water, air, petroleum, natural gas, communication and so on.InspectionWith hydraulic testing,eddy current and ...