Quality Control of Great Rock Reamer Hole Opener

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.

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

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