... round tubes,copper,stainless steel,aluminum,steel, etc. This machine is NC control, for punching & drawing tapered holes on round tubes,copper ... one time forming, no burrs and chips.It is NC control, touch screen operation, error displaying, simple and convenient operation. ... 8) Suitable material: copper, steel, stainless steel, aluminum 9) Control method: PLC, touch screen 10) Total power: 4.5kW NC ...