FiReP® SPINMAX® is a self drilling rock bolt
with advanced torque and pressure resistance.
The high load bearing capacity of the threaded profile
allows strong jointing with drill bits, nuts and also couplers.
Due to it’s cuttability SPINMAX® FRP Self-Drilling Rockbolt
is an economical alternative and also offers
enormous advantages for modern rapid heating methods in tunneling.
Furthermore the cuttability protects the machinery and
avoids obstructions while drifting or enlarging tunnels. 

The bolt has a high radial pressure resistance for injections with resins
or grout and is corrosion resistant for permanent support.
The SPINMAX® offers a high tensile strength and can carry high loads.
Its low weight with high torsional strength makes the bolt well suited
for works in loose rock up to a maximum hardness of 60 – 70 MPa.