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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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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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Darnau Dril Diemwnt Polycrystalline API 8 1/2 Modfedd
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Darnau Dril PDC API 12 1/4 Modfedd Ffatri Tsieina
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Darnau drilio diemwnt polygrisialog corff M166 Maxtrix 12 1/4 modfedd
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Gwneuthurwr darnau drilio API 12 1/4 modfedd mewn stoc
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Cyflenwr API o 6 darn dril craig PDC corff Matrics baldes-6″
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Cost darnau drilio PDC corff Matrics drilio ffynnon olew
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Bit Llusgo PDC API 5 5/8 modfedd 3 Llafn ar gyfer ffurfio caled