8 1/2 inch IADC 637 Roller cone drill bit suitable for hole opener used for HDD

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Hebei Yichuan Drilling Equipment Manufacturing Co., Ltd

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Province/State: Hebei

Country/Region: China

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8 1/2 inch IADC 637 Roller cone drill bit suitable for hole opener used for HDD

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8 1/2 inch IADC 637 Roller cone drill bit suitable for hole opener used for HDD

7 1/2inch roller cones for core barrel, foundation piling bit Picture Size IADC Color WOB (Weight On Bit) RPM Formation 8 1/2inch 215.9mm 637 Blue, yellow, or as required 19684~53428lbs 87.5~237.5KN ...

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single cone drill bit

roller cone bit

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