Great Roller Cone Drill Bit Quality Control

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

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) ...

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

GREAT DRILL BITS can be customized and supply various sizes , type downhole motor according to the drilling demand.