FiReP GRP Bolt Range
Compared with aluminium and steel, glass fibre reinforced plastics (GRP) have advantages that can be traced to the properties of the composite material such as high resistance to corrosion and higher tensile strength.
Depending on the application a GRP bolt can yield a high weight reduction. The application of GRP offers various possibilities.
Benefits of GRP bolts
- Good machinability
- Corrosion resistance
- High tensile strength
- Low weight
- Easy handling
- Good ductility
In cooperation with FiReP International AG (Switzerland) the Minova Group offers a range of GRP products featuring these properties and using state-of-the-art
manufacturing technologies. The material offers high mechanical solidity and favourable long-term behaviour for bolting.
The most commonly used bolt types are:
- POWERTHREAD all-thread bolts (solid and hollow rod)
- SPINMAX self-drilling bolts
- CABLEX cable bolts
POWERTHREAD GRP Bolt K60/J64
The POWERTHREAD GRP Bolt K60/J64 was developed for strata support in mining and tunnelling as well as for slope and face stabilisation.
Due to its continious thread the bolt can be trimmed if needed. The bolt has a high ultimate load and due to its profile it offers a maximum bondage with all grouting material. The cuttability protects machinery and equipment and prevents damage to machinery while drifting and enlarging tunnels. The bolt has a high corrosion resistance and is well suited for permanent support.
SPINMAX Self-drilling Bolt
The SPINMAX Self-drilling Bolt is used for slope stabilisation, face stabilisation, forepoling, and ground support in soft rock, loose or disturbed rock formations. Self drilling bolts for these applications are today state of the art.
Due to its cuttability the GRP Self-drilling Bolt is an economical alternative. Furthermore the cuttability protects the machinery and avoid obstructions while drifting or enlarging tunnels. The bolt has a high radial pressure restistance
for injections with resins or grout, and is corrosion resistant for permanent support.
CABLEX Cable Bolt
The CABLEX Cable Bolt with its wide range of products serves all applications that require long bolts, e.g. long bolting of pilot tunnels, in confined space, or bolting set from parallel tunnel. It can also be used for face stabilisation
or slope protection. Due to the easy mounting the GRP Cable Bolt can be assembled at factory or delivered loose on site. It is therefore possible to meet customers requirements at site (confined location, complicated transport).
Please contact you local Minova partner to learn more about the GRP products.