JORDAHL mounting channels are used to fasten companion structured, even if their final position is not yet known during the planning phase. The channels can be welded or bolted on directly. They absorb tensile and transverse loads. The system solution uses special bolts that facilitate flexible application and lets structural tolerances be easily compensated. JORDAHL mounting channels used in combination with suitable accessories create universal installation solutions, e.g. for the construction of tunnels, vehicles, power stations, machines and plants. The hot-rolled or cold-formed channels are curved and available in other designs.