... GB,DIN,ASTM,EN,AISI welded INOX 201 stainless steel pipe,201 welded tube erw 0.27mm 17mm tube ... (or according to customers' requests)1)Round pipes - Outside diameter(mm) :8,9.5,11,12, 12.7,14 ... 38x25,40x20,48x23,50x15,50x25,60x15,60x30,73x43,75x45,95x454)Wall thickness: 0.3 - 3.0mm5)Length: 6m ( ... #, 180#.etc.7)Tolerance: a) Outer diameter: ±0.15mm b) Thickness: ±10% of wall thickness c) Length: ±4.5mm - ...