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 Drilling with Kelly



 Twin Rotary

 Soil Displacement


Drilling with Kelly

Classic bored pile system which transfers torque and vertical crowd force to drilling tools via a telescopic kelly bar.

  • Borehole wall is supported either by excess hydrostatic pressure or by drill casings.
  • Installation of drill casings by rotary drive or by casing oscillators attached to rig.
  • By using different drilling tools the system can be employed in all types of soil (including bedrock).
  • Diameters 600 - 3000 mm 
  • Drilling depth 15 - 90 m