self drilling hollow anchor barCompared with traditional anchoring process,the hollow injection bolt procedure of drilling,anchoring,installing grouting pipe can be completely prevented,which makes the construction full of convenience.By contract with common hollow injection bolt,self drilling hollow injection bolt makes grouting can be operated after anchoring.And grouting pressure is up to ten kilogram,self drilling hollow injection bolt can not noly be used to fill borehole but also improve the structure of surrounding soils by injecting cement grout into the crevice of rock in poor mass,under high grouting pressure,the good anchoring effect can be clearly seen.
Sinorock® self drilling hollow anchor bar is used as a microinjection pile for a range of applications, including: the stabilization of footings, support to machine bases, underpinning of foundations, noise protection walls and avalanche barriers. The continuously threaded profile lends itself to restricted headroom applications (e.g. basements or under arches), where the bar can be cut and coupled to any length as well as enabling the addition of further sections if deeper drilling is required on location. Buckling resistance compares
favorably with that of a solid bar. Not suitable for permanent tension pile applications.