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Izingcezu zokumba umthombo ojulile IADC127 13 5/8 ” (346mm) esitokweni
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Izingcezu zokubhoboza kahle ezenziwe ngezifiso IADC127 14 3/4 ” (374mm)
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I-Wholesale trione bits IADC127 17.5 amayintshi (444.5mm)
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I-Tricone rock bits IADC137 6 amayintshi (152mm) yokubhoboza umthombo
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I-API tricone drilling bit IADC215 8.5 amayintshi (215.9mm) iyathengiswa
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I-API Tricone rock bits IADC215 12 1/4 ” (311mm) ngentengo ehlisiwe
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I-API drill bits factory IADC216 4.5 amayintshi (114mm)
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Umhlinzeki we-roller cones bits i-IADC216 5 5/8 amayintshi (143mm)
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Amabhithi amarola avaliwe IADC216 5 7/8intshi (149mm)
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Izinyosi ezigayiwe IADC216 6.5 amayintshi (165mm) zokubhoboza umthombo
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Amabhithi e-Tricone esitokisini IADC216 6 3/4 amayintshi (171mm)
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I-API trione drilling IADC216 7 5/8 amayintshi (194mm) yomshini wokugaya uwoyela