High speed spark erosion drilling machine 1.The speed of drilling hole is 30mm-60mm depth per minute 2. ... speed spark erosion drilling machine1.The speed of drilling hole is 30mm-60mm depth per minuter(it is ... 5.Can dill wire-cut starting hole,filter hole,jet hole,gas hole,group holes and hole of super depth etc.6. ... Function of turningNoYesItem NO.161052161053 HIGH SPEED SMALL HOLE EDM DRILLING MACHINE