- Rock Bit for Soft Formation
- 2016-11-06 14:48
- We are Hejian Zhankui Drilling Equipment Co., Ltd. Our factory Specialize drill bits, tricone bit, PDC bit, drill pipe,
- Drill Bits
- 2016-10-27 10:43
- Drilling bit(tooth drilling bit, diamond drilling bit) We take the ISO9001: 2000 and API Spec-7 as main quality standard