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Biit dril côn rholer IADC637 4 5/8″ (118mm)
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Did rholer tricone IADC637 4 3/4″ (120mm) ar gyfer drilio craig galed
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Dant pêl tricone biit IADC637 5.5″ (140mm)
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Ffatri API o TCI tricone biit IADC637 6 “(152.4mm) mewn stoc
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API TCI darn roc tricone IADC637 6 3/4″ (171.4mm)
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Pris did API Tricone IADC637 8 1/2 ” (215.9mm)
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Bit dril botwm Rotari IADC617 12 1/4 modfedd (311mm)
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Gwneuthurwr darnau dril API tricone IADC637 12 1/4 ” (311.1mm)
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Bit dril wedi'i selio â metel IADC637 14 3/4 ” (374.6mm) ar gyfer ffynnon ddwfn
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Did tri chôn IADC637 17 1/2 ” (444.5mm)
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8 1/2 Modfedd PDC Drill Darnau Ffatri OEM
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API 8 1/2 Modfedd Darnau Dril Diemwnt Polycrystalline