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Darn tair côn IADC517 13 5/8″ (346mm)
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Dril botwm API IADC517 17 1/2″ (444.5mm)
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Bit tricon cylchdro API IADC617 6” (152mm) ar gyfer drilio ffynhonnau
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Darn craig tricon IADC617 8 1/2″ (215.9mm) ar gyfer drilio ffynhonnau
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Gwneuthurwr API darn craig tricone IADC617 9 7/8 modfedd” (250mm)
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Ffatri API o ddarn rholer tricone IADC617 12 1/4 modfedd (311.1mm)
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Ffatri API o ddarnau drilio creigiau IADC617 17 1/2 modfedd (444.5mm) mewn stoc
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Darn dill craig mewnosod twngsten carbid API IADC627 3 7/8″ (98mm) mewn stoc
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Darn rholer cylchdro IADC627 8 1/2″ (215mm/216mm)
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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