Process of Great Rock Reamer-Robot Welding

This type of Bi-center bit mainly used for medium to medium hard compressive and abrasive formation.

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

GREAT DRILL BITS can be customized and supply various sizes , type downhole motor according to the drilling demand.

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...