... and good quality Different choices: round /rectangular /square pipes Specifications:1) Round pipes-Outside diameter (unit: mm)8,9.5,11,12,12 ... ,114,133,141,159,2192) Square pipe-Outside diameter (unit: mm)10×10,12×12,15×15,17×17,18×18,19×19 ... : a) Outside diameter: ±0.15mm, b) Thickness: ±10% of wall thickness, c) Length: ±4.5-0mm8) Outer size can be manufactured according to requirementsPacking ...