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11 5/8" KA537G MnNiMo Steel Tricone Water Well Drill Bits Diamond Bit2019-07-24 15:10:02 |
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Wear Resistance Carbide Water Well Drilling 8 1/2'' Tricone Drill Bit2019-07-24 15:10:07 |
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IADC437 IADC637 Tricone Drill Bits Water Well Drilling Forging Processing2019-08-26 17:36:35 |
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6 Inch 152mm Dth Button Bits , Water Well Drill Bits Low Air Pressure2019-11-12 18:24:37 |