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API factory of 8.5 inches roller cutter IADC617 for HDD driling
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8.5 inches single cone roller bits IADC537G for HDD rock drilling
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API 8.5 inches tricone thirds roller cone bit for rotary drilling rig
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China factory 4 3/4″ API roller bit palm for core barrel in stock
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14 3/4 inches tricone bit segments cone bits for piling foundation
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API 12 1/4 inches tricone bit cutter for core barrel in stock
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Foundation Replaceable Type Single Cone Bit for Rotary Drilling Rig Drilling Bucket
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API factory of 185mm TCI tricone cutter for hard rock coring
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API factory of TCI roller cutter for rotary piling drilling rig
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Metal-face sealed bearing roller cone bit for hard foundation
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Single rotary milled tooth roller cone bit for engineering drilling
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API random teeth roller cone bits for foundation bore pile machine
