- 41/2"new PDC bit
- 2016-11-01 06:43
- (TCI) Detailed Product DescriptionWe sell 3 1/2(88.9mm) to 17 1/2(445mm) tricone rock bit with good quality and service.
- drilling bits
- 2016-10-30 11:56
- 1.Cutting Structure of this type tricone rock bits :The wear-resistance of teeth is enhanced with premium tungsten carbi