Significant increase of drilling performance can be reached when using a continuous flight auger which is installed in one continuous pass:

• The soil which is loosened at the auger tip is conveyed to the surface by the auger flight.
• Borehole wall is supported by the auger filled with drill spoil.
• Use of a crowd winch facilitates penetration 
  into hard soil formations.
• Attaching a kelly extension increases the 
  drilling depth by 6 - 8 m. Pile is concreted through hollow stem by means of concrete pump.
• Concrete is pumped by a concrete pump 
  through the hollow stem of the auger while extracting the auger. Concrete feed pressure 
  can be measured at the tip of the continuous flight auger.
• Diameters 500 - 1200 mm
• Drilling depth 10 - 28 m