... , Be Honesty, Mutual Benefit and Customer Supremacy. pre-galvanized steel pipe Products:ItemSpecificationSizeThickness(mm)LengthRound PipeDN:1/2"-14"0.6 ... steel pipes :Low Pressure Fluid Transmission Pipe:GB/T 3091 Q195,Q215,Q235, Q295, Q345, 10#,20#, 16Mn etc.GB/T 13793 ... GR.BEN 10217-1 P195TR P235TR P265TRpre-galvanized round steel pipe Erw Round Structural steel pipesGB/T 13793 Q195,Q215,Q235 ...