GREAT's High-quality Bits Series I

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

Hybrid drill bit conventional PDC and roller-cone bits. It is saving cost, Improves Drilling Efficiency.

Steel tooth drills are suitable for extremely soft formations with low compressive strength and high drillability such as clay, mudstone, chalk, etc..

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