Hole punching machine 1. Max. punching thickness: 20mm 2. Max. punching diameter: 35mm Hydraulic press machine can do the plate material punching,bending, flanging,tensile,fine blanking, cold extrusion ... used for emendation,press-installation,grinding wheel forming and press-forming of plastic products and power metallurgy products.Q46Y-90 hole punching machineTypeQ46Y-90Punch ...