Quality Control of Great Rock Reamer II

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

Core barrel with roller bit is used in very strong rock formations(compressive strength > 100Mpa)

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) ...

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...