... /square pipes Specifications:1) Round pipes-Outside diameter (unit: mm)8,9.5,11,12,12.7,14.5,15.9 ... ,19,20,22,23,28,29,31.8,35,36,38,45,47,48,50.8,60,63,46,88.9,102 ... ) Thickness: ±10% of wall thickness, c) Length: ±4.5-0mm8) Outer size can be manufactured according to requirementsPacking:Inner: bundles packing ...