Galvanized steel pipe 1) Outer diameter: 20mm-273.1mm 2) Thickness: 0.8mm-12mm 3)zinc: 80g/m2, 320g/m2, 600g/m2 Galvanized Steel Pipe1) Material of weld steel pipe: Q195, Q215, Q235, Q345, X52, X602) Standards: Q195/235,SS400,ST37,A36/53/106,API 5L/5CT3) Outside diameter: 20mm to 273.1mm4) Wallthickness: 0.8mm to 12mm5) Length of each pipe: 5.8m, 6m, 11.8m or 12m6)Scaffolding pipe, Structure pipe ...