Great Roller Cone Drill Bit Quality Control

Overview Roller bitGREAT has customized manufacture several types of roller bit . It is including 90 ° U-shaped Roller Bit, 120 ° U-shaped Roller Bit and Starry Sky Roller Bit.The 90 ° U-shaped Rol...

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.

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...