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Isi na-agbagharị maka rig IADC127 9 7/8 ”(250.8mm)
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Ibe mpịakọta cones atọ IADC127 11 5/8 ” (295mm)
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Ngwugwu olulu mmiri miri emi IADC127 12 1/4 ”(311mm)
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Ngwugwu olulu mmiri ahaziri ahazi IADC127 14 3/4 ”(374mm)
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Bits tricone nke a na-ere n'ogbe IADC127 sentimita 17.5 (444.5mm)
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Akụkụ nkume Tricone IADC137 sentimita isii (152mm) maka igwu olulu mmiri
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Iberibe ezé e ji gwuo olulu mmiri IADC215 17.5 inch (444.5mm)
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API Tricone rock bit IADC215 12 1/4 ” (311mm) nwere ọnụ ahịa mbelata
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Bit API tricone drilling IADC215 8.5 inch (215.9mm) dị maka ọrịre
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Ngwa API drill bit ụlọ ọrụ mmepụta ihe IADC216 4.5 sentimita asatọ (114mm)
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Onye na-enye igwe na-egwu ala API IADC216 5 3/4 inch (146mm)
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Eriri ezé a gweri egweri IADC216 6.5 inch (165mm) maka igwu olulu mmiri