Short augers are mainly divided into the following types: 1- Conical Rock Auger 2- Flat or Butterfly Rock Auger 3- Flat or Butterfly Clay Auger 1) Conical Rock Aug...
The rock drilling type is mainly used for weathered rock layer.cemented gravel layer and suprapermafrost layer, it includes straight type and conical type according to the structure, and single-h...