Solid Carbide Drills - UD Series

UD Series - General Purpose Twist Drills


  • New developed curve edge flutes take into account edge strength, tool rigidity and chip flowing space
  • The new design on regrinding parameters of the chisel edge can improve cutting performance effectively
  • Optimized treatment on cutting edge to improve flutes strength and chip-breaking performance
  • Optimized coating post-treatment technology to significantly improve wear resistance.


  • UD drills have excellent rigidity, performance stability and good general machining application. It is widely used in machining of soft steel, stainless steel, alloy steel and cast iron. Special drill nose design brings lower cutting force.