PDC bits, Roller Cone bits, PDC reamers, Hole openers.

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

Overview Starry Sky Roller BitGREAT has customized manufacture 90 ° U-shaped Roller Bit, 120 ° U-shaped Roller Bit and Starry Sky Roller Bit.The Roller bit mainly used for Rock reamer (Hole opener) ...

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

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...