Hollow stem auger
GEOMATECH SAS
The use of the hollow drills is a innovating method of casing to advance making it possible geotechnical industry to tube a drilling of method of rotation simple without the preliminary use of a flushing fluid like the air, 'water or muds of drilling. This technique largely used in the world makes it possible in particular quickly to implement by the interior of the drill of the coring bits intact samplers (CEI) or to carry out the installation of unconstrained piezo on the environment.
One will retain in priority the internal diameter of the drill for the choice of the model. The peripheral tool of the hollow drill is designed to optimize the conditions of drilling and to ensure one optimal lifespan.
The hollow drills are available in the standard diameters 82mm interior X 175mm external, 111mm X 194mm, and 159 mm X 254mm. It can be provided tools lost usable in the formations which allow it in order to save time on the installation of the drill.
