Friction-anchored rock bolts,also called Split Set Bolts ,represent the most recent development in rock reinforcement techniques. Frictional resistance to sliding is generated by a radial force against the borehole wall over the whole length of the bolt.
Self-drilling anchor system are innovative and efficient construction components that combine drilling, grouting, and anchoring functions into a single integrated system. These rock anchor bolts are designed to simplify the installation process, reduce co
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Distribution arresters are the most advanced over-voltage protectors at present in the world. When arrester is under normal voltage, there is only microamp current through it.
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