GREAT's High-quality Bits Series II

Normally drag bits are 3 wings, but we can make 4 or 5 wings following your drawings or samples.

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

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

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