Process of Great Rock Reamer-Robot Welding

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...

Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples.

RC PDC bit from GREAT are manufactured from AISI 4145H heat-treated steel.

Hybrid drill bit conventional PDC and roller-cone bits. It is saving cost, Improves Drilling Efficiency.