Which has a shallow parabolic profile and medium cutter density,designed for coring the medium hard formation.Utilizing different patented PDC cutters enhance the bit’s ability to …

The multiple heel position with gauge trimmer on the heel, tungsten carbide and hardfacing on the shirttail, strengthened spear point will enhance the gauge protection.

The multiple heel position with gauge trimmer on the heel, tungsten carbide and hardfacing on the shirttail, strengthened spear point will enhance the gauge protection.

Enhancedgauge protectionwithhardfacing on the shirttail, strengthenedleg with special insert tungsten carbide.

High precision rollingbearing,hardfacedbearing surfaceand bearing roller. Cone bearing inlaid with friction reducing alloy and then silver-plated,made the rotating more stability, …

High precision journalbearing,hardfacedbearing surface. Cone bearing inlaid with friction reducing alloy and then silver-plated,made the rotating more stability, safety and durabil…

Enhancedgauge protectionwithhardfacing on the shirttail, strengthenedleg with special insert tungsten carbide.

Reinforcing the comprehensive mechanical properties of cutting tooth by using high quality tungsten carbide inserts of new formula and new techniques of insert bit. Widened crest i…