GREAT's High-quality Bits Series II

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

Tricone bit is an important tool for oil drilling.

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

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