Galvanized Square And Rectangular Steel Pipe Thickness 0.5-25 Mm Size 10*10*0.8-1.5~~500*500*10-25 Length 5-12meter Type Seamless ,welded Material Q195,Q215,Q235,SS400,20#.45#,A53,A106,A178,A315 Q345,16Mn,Q390,ST52-3 Technique Hot ...Read More