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tunnel rock crushing machine

Tunnel boring machine 2 types of tunnel boring machine ,hard rock tunnel boring machine. As the name itself implies, the hard rock tunnel boring machine is used to excavate the tunnels in hard rock. they are provided with disc cutters mounted in the cutter head to excavate the rocks. these tbms commonly include shielded tunnel boring machines and the open-type tunnel boring machines.

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Zhengzhou high tech Industrial Development Zone

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