... - Outside diameter(mm) :8,9.5,11,12, 12.7,14.5, 15.9, 17,18,19,20, ... 28x28,30x30,36x36,38x38,40x40,48x48,50x50,60x60,70x70,80x80 3) Rectangular pipes - Outside dimensions(mm) : 20x10, ... ,50x25,60x15,60x30,73x43,75x45,95x454) Wall thickness: 0.24- 3.0mm5) Length: 6m (or according to customers' ... #, 240#, 180#.etc.7) Tolerance: a) Outer diameter: ±0.15mmb) Thickness: ±10% of wall thicknessc) Length: ±4.5mm ...