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Bits ND25
 source:未知  pubdate:2019-06-17 18:04  

The new Diamond DTH drill hole is made of high quality steel and hard alloy as the raw material. After a special heat treatment process, the hardness of the bit bit is reached under rock excavation, and the energy loss in the transmission process is reduced, the stress on the tooth is uniform, Not easy to fall off the teeth and teeth, so the impact of energy-intensive rock to achieve high-efficiency drive.

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