... 16Mn, ...Grade: 10#, 20#, 15MnV, 09Mn2V, 15NiCuMoNb5, 16...Thickness: 0.4 - 13 mmSection Shape: RoundOuter Diameter: 21.3 - 219 inchPlace of ... Galvanized steel pipe Outer diameter : 21.3-219mm Wall thickness : 0.4-13mm Length:3-12mFeatures: High-frequency weldedZinc : 60 ... -120g 200g 300g 400g/m2Outer diameter : 21.3-219mmWall thickness : 0.4-13mm Material: Q195,Q215,Q235, ...