Manufacturer page.

Vik Ørsta CT-Bolt® is specially developed for long life and corrosive environment such as underwater tunnels. The plastic tube that encloses the bolt provides a total seal against corrosion. The bolt takes immediate load and can be pre-tensioned before it is cast in and it has been specially developed with a view to being rapid to install in addition to being easy and safe to cast in. Our bolts are manufactured in Norway where we use high quality European produced rebar steel for the M22 CT-Bolt®. Our green sleeve (injection tube) are made locally of recycled ocean plastics. The steel is hot-dip galvanized and powder coated (CombiCoat®) to achieve 120 years of corrosion protection (ref.: SINTEF report based on laboratory testing in collaboration with Vik Ørsta AS. Read more about CombiCoat® on www.vikorsta.no) All of our rock support bolts made of K640 Vanadium is produced according to NS-EN 1090 and delivered CE-marked. EPD values are based on the finished assembled CT-bolt with injection tube, hemispherical dome, expansion shell, CT-plate and nut.