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Water Well Drilling Special Steel Dth Bits DHD350-135mm Tungsten Carbide2020-03-10 13:39:15 |
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DHD360 Shank Diameter 152 165 178 190 203mm DTH Drill Bits2024-10-31 11:39:21 |
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4''-110mm Down The Hole dth drill bit for mining2026-05-15 19:43:27 |
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DHD340 4" -115mm Special Steel Tungsten Carbide Drill Bits For Drilling2019-12-17 17:30:40 |