The Sinorock® SDA bolt from China is a hollow bar injection-bore micropile that serves as an economical solution for challenging soil conditions where installing conventional micropiles may not be the best option. For example, those with collapsible soils (those not conducive to open-hole drilling), large boulders, or other obstructions.

Components of the Sinorock Self-Drilling Anchor bar:

Hex Nut

Termination Plate for new construction or bracket for underpinning

HDPE Pipe for unbonded length or additional corrosion protection

Soil Cement Grout Body

Final Injection Grout

Magnacore Self-Drilling Anchor Bar allows injection while serving as drill strong


Centralizer to keep the micropile centered in the hole to allow for optimal grout cover

Sacrificial Bit

Grout Flushing Holes

When you work with Sinorock and our partners, you experience a level of customer service and convenience, unique to the construction industry. Our full-time Engineering staff allows us to overcome common design challenges within the industry. Sinorock brings design theory to practical field application by using computer assisted design capability through interactive software programs.