GREAT's High-quality Bits Series I

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

This type of Bi-center bit mainly used for medium to medium hard compressive and abrasive formation.

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

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) ...