Tunneling Applications

There is no other company in the world more knowledgeable or with better product SOLUTIONS than Sigma DG and Pultron Composites. Combined, we have over 120 years of fiberglass knowledge to serve your needs. Cutable soil and rock reinforcement in tunnel excavation has become more widely used as the design properties and contractor/engineer knowledge has increased in the industry. Mateenbolt fiberglass rock bolts are primarily used in areas of tunnel construction where subsequent excavation will take place such as:

SEM/NATM Face Bolting

TBM Soft Eye Secant Pile Soil Nails

Temporary Ground Support for Launch Pits

Ground Support Handbook


fiberglass rock bolts