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Tricone bits manufacturer IADC127 4 9/16 pulgada (115.9mm)
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Tricone bits factory IADC127 5 7/8 pulgada (149mm) para sa hard well drilling
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Tibuok drill bits pabrika IADC127 6 1/4 pulgada (158.8mm)
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Tricone bits supplier IADC127 7.5 pulgada (190mm)
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Mga drill bit sa stock IADC127 7 7/8 pulgada (200mm)
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API rig drilling bits IADC127 8 1/2 pulgada (215mm) para sa gahi nga bato
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Tricone bits sa stock IADC127 8 3/4 pulgada (222mm)
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API mill tooth bits sa stock IADC127 9.5 ka pulgada (241mm)
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Diskwento sa tricone bits IADC127 9 5/8 ”(244.5mm)
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Nagtuyok nga ulo alang sa rig IADC127 9 7/8 ”(250.8mm)
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3 cones roller bits IADC127 11 5/8” (295mm)
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Deep well drilling bits IADC127 13 5/8” (346mm) sa stock