GREAT's High-quality Bits Series I

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

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

This is a 7 blade Matrix body PDC bit , with Stinger cutters back row, used for very 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) ...