... . Thickness:0.3-12.0mm. OD:20*20-200*200mm Square Pipe1)Material: Q195/Q215/Q235,Q345,20#,45# etc.2 ... )Surface: Galvanized or naked as customers' need;5)Product Type: Square pipe, Rectangular tubes, ERW tubes, Seamless &Welded steel pipe, Galvanized ... squazzing etc. We also can do processing to the Square Pipe.square pipe widely used in construstion structure,machinery,container,door and ...