... tubes,copper,stainless steel,aluminum,steel, etc. This machine is NC control, for punching & drawing tapered holes on round tubes,copper,stainless ... servo motor feeding, high precision, quick speed.It is hydraulic punching & drawing tapered bores, one time forming, no burrs and chips ... steel, aluminum 9) Control method: PLC, touch screen 10) Total power: 4.5kW NC tapered bore punching machine