2017 tapered rock drilling auger bi. Xiamen Betopper Mining .
Product Name: tapered rock drilling auger bit&tungsten carbide drill rock bit. Types. Tapered chisel bits, Tapered cross bits, Tapered button bits. Application:: Tapered drill bits are used in granite and marble quarry, gold mine, railway, tunnel, etc. for drilling. Feature: Tapered drill bits connect tapered drill steel of rock drill for.Live Chat