1.Due to the increase of buried depth and the uncertainty of formation, the drilling speed and efficiency are greatly hindered, among which the bit selection of some complex layers is difficult, which is mainly reflected in the low stroke drilling speed of conventional bit, many times of starting and falling drilling, difficulty in orientation and other aspects.

In view of the complex formation, poor drillability, soft and hard interlock, difficult orientation, easy to release pressure, our company developed a variety of sizes, models, performance of the mixed bits can be selected, the use of mixed bits can more effectively improve drilling efficiency, shorten the drilling cycle.

2.Our Advantage
----adequate stocks
----competitive price
----timely delivery
----factory direct 
3.Packing/Shipping
Packing :wooden case or iron case ,also be packaged according to customer requirements.
Modes of transportation: by sea, by air or land transportation, Of course, a small amount can also by Express.
4、Company Profile
Cangzhou Great Drill Bit Co.,Ltd was founded in 2010, and the company is located in Hejian Development Zone, Hebei Province.We have multiple international advanced CNC machining center production lines with combined turning and milling and multi-axis linkage. Cumulative sales of more than 100,000 drill bits.Main products: PDC bit, tricone bit, coring bit, bi-center bit, Torkbuster ， PDC reamer, PDC hole opener, rock reamer, customized cutters.