The next generation Rock bits

Overview 120 ° U-shaped Roller bitGREAT has customized manufacture several types of roller bit . The traditional roller bit was cut by tricone bit . So it is including No.1 ,No.2, No.3 Cone cutters ....

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...

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

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) ...