[Application scope] The matching screw motor is used for directional drilling construction of gas drainage holes, water drainage holes, grouting reinforcement holes, etc. in coal mines.
[Technical features] The drill bit has a right-angle inner tapered blade wing structure, and the density of the teeth is increased. The drill body is formed by a sintering process. Compared with the steel body drill, it has strong wear resistance, is not easy to reduce diameter, and has a long life.
[Common specifications] φ96mm, φ98mm, φ120mm, etc.
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