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14 3/4inch TCI roller cone rotary bit tci tricone bit for oil drilling2019-07-11 15:32:10 |
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12 1/4 Inch Milled Tooth Drill Bit / Roll Forged Water Well Drill Bit2020-04-16 10:02:41 |
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190MM Steel Tooth Tricone Bit 7 1/2inch For Water Well Drilling2020-04-15 16:52:01 |
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New sealed bearing IADC 547 Cone bit, three-cone bit, single-cone bit2019-08-20 15:11:37 |
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Newly Produced Sealed Bearing 8 1/2" IADC 537 Single Cone Drill Bit2019-10-07 15:45:58 |