Bellino manufactures
augers with threaded or exagonal connections, according to the same standard
quality fixed for friction welded drill pipe.
They have both the tool-joints welded (friction welded) on the pipe and also for
this they guarantee more reliability and quality.
The pipe, made of N80 steel, ensures a tensile strength of 680Nmm2, and the
metal spiral has a thickness of 10mm and – with the cutting edge process
available in house - it is welded on a drill rod in order to obtain a continuous
flighting.
The augers’ pitch is designed depending on the outside diameter, so that the
feeding speed can guarantee the holes’ uprightness.
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