Rock cone drill bit PDC bit Grinding and trimming

PDC Reamer is the perfect tool for large diameter HDD bores. The size of the reamer is ranging from 12" to 50".

GREAT DRILL customized Rock reamers size from 10'' to 72''.

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

Overview Roller bitGREAT has customized manufacture several types of roller bit . It is including 90 ° U-shaped Roller Bit, 120 ° U-shaped Roller Bit and Starry Sky Roller Bit.The 90 ° U-shaped Rol...