- 12 1/4" IADC637 rock bit for water drilling
- 2016-11-07 02:03
- 12 1/4" IADC637 rock bit for water drilling1.The durability of premium tungsten carbide inserts are improved with new fo
- 4 5/8" IADC637 water well tci rock bit with high rotary speed
- 2016-10-02 13:34
- 1.The durability of premium tungsten carbide inserts are improved with new formulas and new techniques for insert bit;2.
- 20" IADC537 metal drilling spade drill bit for media hard rock scrap tricone drill bits
- 2016-10-02 13:34
- 1.The durability of premium tungsten carbide inserts are improved with new formulas and new techniques for insert bit;2.
- 14 3/4" IADC437 TCI rock bits cutter for hole opener made in China
- 2016-10-01 21:20
- 1.The durability of premium tungsten carbide inserts are improved with new formulas and new techniques for insert bit;2.