Seif drilling rock bolt

Self drilling rock bolt is different from the ordinary rock bolt,it change the
way of grouting before anchoring of ordinaryrock bolt,when grouting the
pressure of it up to tens of kilograms, not only to fill the anchor hole, but
also in cracks development of the region, the slurry grouting under pressure
to penetrate into cracks, achieve the purpose of improving the surrounding
rock structures.
Sinorock is a professional rock bolt manufacturer.It adopts the advanced
production equipment and strictly quality control system to ensure that we can

provide customers low-cost, and high quality construction materials.

http://www.rockbolt.org