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Dragongrip™ GFRP Hollow Injection Bolt (GFRP Hollow Grouting Bolt, GFRP Hollow Injection Bar, GRP Rock and Soil Nail, GFRP Soil Nail) is a good alternative product compared with steel products when used in geotechnical engineering projects. The GFRP Hollow Injection Bolt is manufactured by the pultrusion process technology and special mechanical production methods with high-quality raw materials of glassfiber reinforced and polyester/vinyl/epoxy resin according to different application environments.
Compared with traditional metal products, GFRP Hollow Injection Bolt shows a high loading, torsion resistance, and pressure resistance capacity with accessories, but the weight is only one-quarter of the metal product. Moreover, the bolt can remain in the borehole and bear load with plate and nut at the end after injection work. It has a very good bonding force with all grouting materials. Due to high injection pressure, it can realize full grouting and improve project quality.
