... ) Round pipes - Outside diameter(mm) :8,9.5,11,12, 12.7,14.5, 15.9, 17,18,19,20,22,23,28 ... ,38,45, 47,48,50.8,60,63,76,88.9,102,114,133,141,159,2192)Square pipes - Outside dimensions ... ) Outer diameter: ±0.15mm b) Thickness: ±10% of wall thickness c) Length: ±4.5mm - 0mm8) Other size can be manufactured according ...