As one of the professional oil drill bit manufacturers in China, Great now presents you with our latest PDC drill bit for oil fields. These oilfield bits can carry out high-efficiency drilling with stable performance.
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...