Mainly used in anchor net supporting hole drilling of the coal mining,
providing a powerful guarantee for the fast and efficient roadway excavation.
We manufacture various pdc bit for different drilling application. This type you saw is for drilling coal. The size is 25mm, 27mm, 28mm, 30mm, 32mm, 36mm, 42mm, etc. All design could be made according to your requirements and it can satisfy different customers specific needs. We insist on honesty to provide customers high performance products with competitive price.
