Hollow Bar system
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Drill Bits
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Expansion Shell Anchor Bolt
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Hollow Bar System

CMP hollow bar system is a fully threaded hollow core bar that is initially a server as a drill rod with a lost bit, and later, once grouted in, it becomes an anchor tendon that can be stressed and locked off with a nut. CMP hollow bar system provides the optimal solutions for nailing, bolting, micro piling and as ground anchors in difficult ground and rock conditions.
Drilling, anchors installation and grouting are in one single operation, it is easy and fast to install.
An economic alternative to anchors installed with cased drilling.
Small workspace needed.
Simple systems, low requirements on personnel.
No separate anchor installation or removal of casing and drill rods, increase productivity.
Easy stressing operation.
Flexible in length by using couplers.
Choice of drill bit for different ground conditions.
Enhanced corrosion protections available upon request.
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