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PDC Four Wings Concave Drill Bit, Non Coring Bit For Well Drilling |
| Create: 12/28/2016 |
| Expired Date: | 12/28/2018 |
| Category: | Electronic |
| Message: | PDC concave drill bit is mainly used for drilling soft-medium formation, such as mud shone, limestone, shale, sandstone and granite etc, it has been wildly used to penetrate the degassing hole, drain hole and grouting hole of coal mine, water, road construction, bridge and building. The three wings normal type concave drill bits suits for f |
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| City: | Xian[CN]
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| Location: |
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