Rock bolt is a kind of fully thread hollow bar. It combines drill pipe with grouting pipe and is multifunctional with drilling, grouting and anchoring functions of supporting high-tech products. The length of the flexible anchor body with extended added features. This tool is not only suitable for railway, tunnel, mine, water conservancy, dam, bridge foundation, the foundation of the high-rise building and building reinforcement engineering, but also for pre-support projects, radial support project, slope stabilization, soil nail wall, back pull anchor rod retaining wall and other rock supporting work. This kind of drill hollow bolt is one of the important supporting method of coal mine roadway, especially with the constant improvement and practice of anchor bolt support technology, for coal mining, the safety and
reliability of widely attention and promotion.
Sinorock rock bolt has great advantages. It combines drilling, grouting into single process. In this way, the work efficiency has been improved greatly. The Sinorock rock bolts have great quality and reasonable price. The products has been exported to more than 20 countries and used in many kind of applications. Different kinds of drill bits can be provided to meet the demands of different rock conditions.

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http://www.rockbolt.org/rock-bolt/r38-rock-bolts/