12-1/2" IADC 217 Tricone Roller Cone Bit For Oil Field Geothermal Mining Drilling Durable High Penetration Performance
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Tricone Rock Bit 12 1/2" Mining Roller Rock Tricone Drill Bit Description The tricone rock bit is the most widely used drilling bit. When the tricone drill bit is working, the cutting teeth alternately contact the bottom of the hole, the rock breaking torque is small, the contact area between the cutting teeth and the bottom hole is small, the specific pressure is high, and it is easy to drill into the formation; the total length of the working edge is large, so the wear is