15 1/2inch Tricone Bit
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Factory Sale 15 1/2 inch IADC537 Tricone Bit Rock Roller Bit For Well Drilling and Oil Field
Type: 15 1/2 inch IADC 537 Tricone bit
Opens conductor holes and large-diameter water wells through medium-hard limestone and sandstone at 60-130 MPa with 18mm TCI inserts.
Thread: 7-5/8" API Regular Pin.
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