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133mm Concentric Casing Drilling bits With 3 Wings For undtable formation2025-05-21 17:56:44 |
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T38 Symmetric Casing Drilling Bit For Tunneling N80 With Raw Materials2025-05-22 13:37:07 |
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T38 Symmetric Casing Ring Drill Bit 114mm S355 Steel Materials Tunneling2025-05-22 14:15:00 |
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Waterwell Overburden Drilling System Rock Core Drill Bits 2 Inch2025-05-22 17:18:56 |