square and rectangle pipe

The following are the specifications of different kinds of square pipe:15*15-600*600pipes .Rectangle pipe:10*20-600*500, wall thickness:0.6mm-20mm.Criterion for Implementation GB/T6728-2002,material:Q195,Q215,Q235,Q345B,20#.We can also produce special specification(such as special wall thickness or material)according to customers’ requirement.