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165mm Chevron Bit API 3 1/2'' REG Thread Type Long-lasting Drilling2025-03-05 15:45:01 |
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DHD3.5 Thread Down The Hole Water Well Drilling Bits With Convex Face2023-06-29 11:47:54 |
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Convex Face DTH Water Hammer with Various Weights2023-09-04 10:24:59 |