Hot dipped galvanized steel square pipes Thickness range: 1.5-12mm Outer diameter: 20x20-200x200mm Length: 4-12mm Zinc: 180-300g Material: q195, q235, q345, a500 20#, 45# Standard: astm a53-2007, astm a106-2006, bs1387 We have products such as steel pipe, pre-galvanized steel square pipes, black square steel pipes, black round steel pipes, hot dipped galvanized steel square pipes, pre-galvanized steel round pipes, hot dipped galvanized steel round pipes and so on.
