12 1/4" tungsten carbide inserted mining tricone bit

17 1/2 inch tci tungsten carbide insert tricone drilling roller drill bit for w

US $4360 / pc

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Chuan Shi IADC537 sliding bearing Insert oil well drill tci tricone bit sizes

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14 3/4" TCI(tungsten carbide insert) tricone rock bits

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121 4 IADC517 water well drilling tungsten carbide insert tricone bit

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Supply insert tricone bits

tricone drill bit

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