Versatile solutions for underground corridors

Corrugated tunnels are factory made according to the customer’s needs. Various walking and shelving platforms, pipe brackets, conveyor platforms, partitions and doors, safety railings, emergency exits, and lighting and equipment mounts can be installed already at the factory.

As a total investment, the connecting tunnel is cheaper than many other solutions. The affordability is affected by its installation speed, the small number of committed project and installation personnel, and the customer-specific equipment carried out in factory conditions.

The material of the tunnel is hot-dip galvanized steel. The tunnel is light in weight and its installation is very easy and fast, as there is no need for heavy basic and foundation work. In addition, the appearance and comfort of the tunnel can be influenced by various color options, among other things.

Contact us

Sales representative
+558 2566 587

Sales representative
+558 2566 587

Features and Benefits

Quick and easy installation

The installation of the structure is carried out very quickly. Lightweight pipes are installed in parts, and a team consisting of a trained supervisor and ordinary employees is enough for installation. In addition, for successful installation, only a crane or excavator and basic tools are needed. 

Suitable for extreme temperatures

 Installation is possible in both frosty and hot weather. For pipes, a suitable temperature range is -50-+50 °C. 

Long service life

The steel is corrosion-resistant by hot-dip galvanizing and additional protection. This ensures a service life of up to 100 years. When the pipes are installed correctly, they do not need special maintenance. 

Resistance to corrosive environments

High-strength steel, corrosion protection and reduced construction ensure a long service life of threaded-seam structures. The pipes can be designed with either hot-dip galvanizing or an additional 300 μm polymer layer on both sides 

Environmentally friendly material

The carbon dioxide emissions and energy and water consumption of steelmaking are significantly lower than those of concrete production. Steel is also an environmentally friendly material, as it is 100% reusable. In addition, the quick installation of pipes does little to pollute the environment.

  • Diameters produced: <Ø4,500 mm 

  • Delivery length: customized, usually 6–24 m/ part 

  • Load capacity: suitable for all traffic loads 

  • Ainevahvuus: 1,5–4,0 mm 

  • Steel grade: from 250 MPa (Re) 

  • Material: cold-formed, spiral-bonded corrugated steel 

  • Painting/corrosion protection: by condition class 

  • Available shapes: round, pipe arch 

  • In accordance with the current InfraRYL and Pipe Bridge guidelines 

  • Approval: CE approval according to EN 1090-1, ISO 9001-2015 

  • Service and technology tunnel 

  • Underground passages 

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