Since SDA bolt is mainly used in the fault fracture zone advanced  support construction, under the complex geological conditions  instead of ordinary catheter, overcoming the problems such as hole collapse, unable to plug rod, grouting is not full,ect. which played  a supporting role in advance, ensuring the overall stability of the  surrounding rock, and the safety of construction personnel and tunnel with good application value. 

Sinorock is market leaders in the design, manufacture and supply of mechanical earth anchoring products. Founded in 2011, we are renowned for providing some of the most innovative and cost effective anchoring solutions for the Civil Engineering and Construction industries. 

When you find your best source for your self drilling anchor supply,you’ll see just how valuable it is. Here, a friendly staff is ready to work with you and form a business relationship that will hopefully last far into the future. Having all the right tools and equipment for the job is certain to make a big difference when it comes to the final results, so why not make the investment? Whether you are just one person doing DIY or a whole construction company finishing a building, your supplies matter.