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Overburden drilling

 

 

 

Style: ODEX-eccentric, Symmetrix-concentric

Hole Diameter(ODEX-eccentric: 114-324mm
              Symmetrix-concentric:  114-610mm) 
              

 Features:
 

  • Pilot bit is well designed to offer good drilling efficiency.
  • Optimization design for each part reduces the probability of accident.
  • Strengthening quality of stable pole driller extends the drilling life and improve cost-4、performance ratio.

 

 

 Working Principle: 
ODEX-eccentric

Symmetrix-concentric