... offer, best prices and good quality Different choices: round /rectangular /square pipes Specifications:1) Round pipes-Outside diameter (unit: mm)8 ... 63,46,88.9,102,114,133,141,159,2192) Square pipe-Outside diameter (unit: mm)10×10,12×12, ... ,40×40,48×48,50×50,60×60,70×70,80×803) Rectangular pipes: Outside dimensions (mm)20×10,23× ... ,40×40,48×48,50×50,60×60,70×70, 80×804) Wall thickness: from 0.3 to 3.0mm5) ...