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Bit rholer tricon IADC637 4 3/4″ (120mm) ar gyfer drilio craig galed
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Bit tricon dannedd pêl IADC637 5.5″ (140mm)
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Ffatri API o TCI tricone biit IADC637 6 “(152.4mm) mewn stoc
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Darn craig tricôn API TCI IADC637 6 3/4″ (171.4mm)
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Pris darn API Tricone IADC637 8 1/2” (215.9mm)
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Dril botwm cylchdro IADC617 12 1/4 modfedd (311mm)
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Gwneuthurwr darnau drilio tricone API IADC637 12 1/4” (311.1mm)
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Darn dril wedi'i selio â metel IADC637 14 3/4” (374.6mm) ar gyfer ffynnon ddofn
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Darn tair côn IADC637 17 1/2” (444.5mm)
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Cyflenwr darnau tricon IADC637 6.5 modfedd (165mm) ar gyfer craig galed
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Darnau rholer cylchdro IADC637 9 7/8” (250.8mm)
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Ffatri API o ddarn côn rholer IADC637 3 7/8″ (98mm) mewn stoc