4-1/8" Tricone Roller Bit , Well Drilling Equipment SGS ISO Listed2022-03-15 15:38:40 |
5-7/8" Tungsten Carbide Drill Bits For Hard Formation Pin Connection2019-07-24 15:10:19 |
14 3 / 4 " IADC 517 TCI Tungsten Carbide Drill Bits Rotary Drill Bit2022-03-15 15:38:39 |
Soft Formation IADC 517 Water Well Drilling 5 1/2 Tricone Drill Bit2022-08-25 15:18:20 |