Yanggu Yihui Drilling Tools Co.,Ltd.
ADDRESS:No.216 Zhengyang Road, Qingdao, Shandong,China.
The SDA bar system offers quick installation because of drilling, borehole stabilization and grouting are combined in one cycle.
Self-Drilling Anchors are a bolting solution for unstable ground conditions such as sand, gravel, silt, and clays, and in soft to medium fractured rock formations.
By drilling a hole in collapsing soil or loose rock, with a sacrificial drill bit and a hollow rod, and after the drilling operation injecting cementitious grout or resin into the hollow rod and surrounding cavity, self-drilling anchors are a top productivity solution.
Self-drilling anchors bolts consists of:
Hollow anchor rod(s)
Sacrificial drill bit