PDC Drill Bits

GREAT DRILL customized Rock reamers size from 10'' to 72''.

PDC Reamer is the perfect tool for large diameter HDD bores. The size of the reamer is ranging from 12" to 50".

Core barrel with roller bit is used in very strong rock formations(compressive strength > 100Mpa)

Raise Boring Cutters OverviewThe raise boring cutters is mainly used for the construction of vertical shafts, ventilation shafts inclined shafts, pressure regulating shafts and escape shafts , and it...