Based on different geological and hydrological conditions, deep foundation excavation support should adjust measures to local circumstances. In actual engineering, foundation excavation design should transform from traditional intensity control to deformation control, in order to avoid damage for surroundings. Subway stations and other underground engineering are usually constructed in dense building group and construction plant is narrow, which will probably bring security problems. Self drilling hollow anchor bar combines drilling, grouting and anchoring together in narrow places with little noise and little influence on surroundings. With different materials, the self drilling hollow anchor bar is a convenient, economic, reliable, secure and efficient supporting method. As an efficient anchoring method, SDA bolt is mainly used for slope stabilization, foundation with micro-piles and tunneling, it’s also widely used in the railway system, metro project, etc.
The SDA bolt of Sinorock is involved in many areas of the construction field. A few examples of our specialties include tunnel rehabilitation and enlargement, soil stabilization, rock fall mitigation, shaft construction, shotcrete, culvert installation, soil nail and rock bolt installation. We believe the only way to guarantee quality is to stand responsible for the entire production process. For that reason we start with producing all our steel in-house. We bring to bear over 4 years of experience in manufacturing high-grade Bearing Steel to all our manufacturing processes and to all our SDA bolt products.