1)Material:Q195,Q215,Q235,Q345 2)Standard:GB/T3091-2001, ... assure the high quality of hot dip galvanized steel pipe. 1)Material:Q195,Q215,Q235,Q3452)Standard:GB/T3091-2001,BS1387 ... )Zinc coating:300-400g/m2Standard:GB/T30912001Diameter: 48.3MMWall Thickness:1.0-12mmLength:1-12m48.3mm*3.2mm*6m48.3mm*3.0mm*6m48 ...