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