The Donges Group is a leading full-service provider for steel bridge
and steel construction as well as roof and facade systems in Europe.
Building with steel
Donges SteelTec, the traditional steel construction company with headquarters in Darmstadt, is one of the leading steel bridge and steel building construction companies in Germany.
Building envelopes made of aluminium
Kalzip is a leading international manufacturer of aluminum roof and facade systems based in Koblenz.
Let’s build it together
Normek is one of the leading companies for steel structural engineering, steel bridges and facade solutions in Northern Europe.
For roofs around the world.
FDT is an established supplier of flat roofing systems on the European market.
Norsilk is one of the major French players of northern wood with the highest quality for professionals: industrial, professional distributors and DIY superstores.
The Donges Group is a leading full-range supplier of bridge and steel construction as well as roof and façade systems in Europe. Since November 2017, the company has been wholly owned by the Mutares Group and represents a strategic platform investment in the Engineering & Technology portfolio segment.
After five strategic acquisitions, the Donges Group expects to achieve cumulative annual sales of around EUR 400 million. The company combines the brands Donges SteelTec, Kalzip, Normek, FDT and Norsilk and employs around 1400 people in 14 countries.
The product portfolio includes steel bridges for road, rail and pavement construction, building construction, industrial steel construction, steel frame constructions, aluminum roof and façade solutions, glass façade solutions and flat roof roof-systems.
The Donges Group is internationally active with fourteen locations in Germany, France, Spain, Italy, England, Finland, Sweden, Singapore, India and Dubai.
Following the successful completion of the restructuring process and five completed add-on acquisitions – Kalzip, Normek, FDT and Norsilk – Donges is striving for further growth and consolidation of its very good positioning in the European market. The strategy’s pillars are the development of Northern European markets for bridge construction, the realization of synergies in the areas of building construction and buildings, and the use of existing sales channels in sales across the entire product portfolio.
The Donges Group creates significant added value for its customers through its high value-added depth and the broad product range of its portfolio. Experienced engineers offer comprehensive and tailor-made solutions in the fields of steel construction, façade construction and roof systems. Here the group draws on its tradition and combines creativity and innovation with the individual needs of the customer.
Worldwide presence of Donges Group with headquarters in Frankfurt am Main, Germany
Michigan / USA
Dubai / UAE
Gliwice / Polen
Madrid / Spanien
Paris / Frankreich
Öjebyn and Stockholm / Schweden
Haydock / UK
Nivelle / Belgien
Koblenz / Deutschland
Darmstadt / Deutschland
Alavus, Naarajärvi and Oulu / Finnland
Mannheim und Hemsbach / Deutschland
Gurgaon / Indien
Frankfurt am Main / Germany
Donges Group Headquarters
Gorgonzola / Italien
Vantaa office, Finland HQ
Boulleville office, France HQ
Steel Construction – Roof Systems – Facade Solutions
as top priority – resulting benefits from connecting individual companies to a group: