Expansion Shell Rock Bolt ∮36-38-45-57
Rock bolt, in tunneling and underground mining, steel rod inserted in a hole drilled into the roof or walls of a rock formation to provide support to the roof or sides of the cavity.
Product Introduction
As the professional manufacture, we would like to provide you Expansion Shell Rock Bolt.
Rock bolt reinforcement can be used in any excavation geometry, is simple and quick to apply, and is relatively inexpensive.
The installation can be fully mechanized.
The length of the bolts and their spacing can be varied, depending on the reinforcement requirements.
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