... the Tube Mill to make the stainless steel pipes, cooper pipes, iron pies, aliminum pipes, steel pipes etc.2.With processing by ... the problem caused in the process o f making stainless steel pipe like scuffing, wrinkling, nail lines, fish-scale veins.Advantage1 ... .04mm63-65HRCRectangleF10*20-F120*60Cr12Mov/SKD11/D2Flatness+/-0.04mm63-65HRC roll forming stainless stetel pipe