... , 63mm, 63.5mm, 76mm, 89mm, 101mm, 114mm, 133mmSquare pipe specifiction: 10*10mm, 12*12mm, 15*15mm, 19*19mm, 22*22mm, 25*25mm ... , 50*50mm, 60*60mm, 80*80mmRectangular pipe specification: 15*10, 20*10, 25*10, 25*13, 30*15, 32*16, 40*20,38 ... # and hair lineTolerance: outer diameter a)±0.15mm b)Thickness: ±10% of wall thickness c)Length: ±4.8mm – 0mm welded and ...