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Factaraidh API de bit còn Roller IADC637 3 7/8 ″ (98mm) ann an stoc
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Solaraiche pìosan putan IADC637 7 7/8 ” (200mm)
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Pìosan creige API tricone IADC637 9 5/8 ”(244.5mm) ann an stoc
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Bit tricone TCI IADC617 6 1/2 ″ (165mm) airson inneal drileadh
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Solaraiche API de phìosan drileadh tobar creige domhainn IADC537 9 5/8 ″ (244.5mm)
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Pìos putan API TCI IADC537 9 7/8 ″ (250mm) airson drileadh tobar creige cruaidh
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Bit Putan Rotary IADC537 3 7/8 ″ (98mm)
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Bits Tricone IADC537 4 5/8 ″ (118mm)
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Pìos drile tricone IADC537 4 3/4 ″ (120.6mm)
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Pìos creige tricone API IADC537 5 1/4 ″ (133mm)
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Pìos drile creige API IADC537 5 1/2 ”(139.7 mm) airson tobar cruaidh
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Pìos drile API IADC537 5 5/8 ″ (142.9mm)