... holes on round tubes,copper,stainless steel,aluminum,steel, etc. This machine is NC control, for punching & drawing tapered holes ... on round tubes,copper,stainless steel,aluminum,steel, etc., especially the ... 0.2mm 8) Suitable material: copper, steel, stainless steel, aluminum 9) Control method: PLC, touch screen 10) Total power: 4.5kW