... offer, best prices and good quality Different choices: round /rectangular /square pipes Specifications:1) Round pipes-Outside diameter (unit: mm)8,9 ... ,28,29,31.8,35,36,38,45,47,48,50.8,60,63,46,88.9,102,114,133,141 ... ,30×30,36×36,38×38,40×40,48×48,50×50,60×60,70×70,80×803) Rectangular pipes: Outside dimensions ... ,30×30,36×36,38×38,40×40,48×48,50×50,60×60,70×70, 80×804) Wall thickness: from 0 ...