High-quality Drill Bits from China

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

PDC Hole Openers, are used to enlarge the pilot hole in Horizontal Directional Drilling(HDD).Widely used in construction, bridge, highway and railway construction.

GREAT customized made Diamond core bits ,which including Matrix body and Steel body.

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