... tube section shape: rectangular material: steel size:20X30X1.5mm to 200x400x11.75mm,length 5.8M,6M welded rectangular steel ... tubesection shape: rectangularmaterial: steelsize:20X30X1.5mm to 200x400x11.75mm,the length 5.8M,6Mcold rolled ... 5-5.75mm, 7.5-9.75mm, 11.5-13.5mm150x200mm2.5-2.75mm, 3.0-4.0mm, 4 ... 5-5.75mm, 7.5-9.75mm, 11.5-13.5mm200x400mm4.75-7.75mm, 9.75-11.75mm welded ...