Hollow Bar System are fully threaded steel bar which can be drilled and grouted into loose or collapsing soils without a casing.
The bar features a hollow center for simultaneous drilling and grouting and a rope thread for connection to standard drill tooling.
Standard rope thread profile (R25 - R51, T76 has a trapezoidal thread). Durable drill rod suitable for a range of applications.
Can be installed into a variety of different soils and ground conditions ranging from sand and gravel to inconsistent
fill, boulders, rubble and weathered rock, as well as through footings and base slabs.
Combines both operations into a single construction cycle, enabling high rates of production
Can be installed into loose or collapsing soils without the need for a temporary casing to support the borehole
Allows quick rates of installation, good directional stability and assists in the consolidation of the grout within the borehole