• The Donges Group is a leading full-service provider for steel bridge
    and steel construction as well as roof and facade systems in Europe.

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  • 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.

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  • Building envelopes made of aluminium

    Kalzip is a leading international manufacturer of aluminum roof and facade systems based in Koblenz.

    Learn moreVisit Website

  • Let’s build it together

    Normek is one of the leading companies for steel structural engineering, steel bridges and facade solutions in Northern Europe.

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  • For roofs around the world.

    FDT is an established supplier of flat roofing systems on the European market.

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  • Norsilk is one of the major French players of northern wood with the highest quality for professionals: industrial, professional distributors and DIY superstores.


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Donges Group

Connecting.Solutions.Successfully.

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 three strategic acquisitions, the Donges Group expects to achieve cumulative annual sales of around EUR 280 million. The company combines the brands Donges SteelTec, Kalzip, Normek, FDT and Norsilk and employs around 950 people in 12 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 twelve locations in Germany, France, Spain, Italy, England, Finland, Sweden, Singapore, India and Dubai.

Strategy

  • Steel Bridges

  • Steel Structures

  • Roof Systems

  • Facade Systems

  • Wood Structures

Following the successful completion of the restructuring process and three completed add-on acquisitions – Kalzip, Normek and FDT – 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.

  • Donges SteelTec

    Steel Bridges
    Steel Structures

    180 Employees

  • Kalzip

    Roof Systems
    Facade Systems

    170 Employees

    Kalzip

  • Normek

    Steel Bridges
    Steel Structures
    Facade Systems

    200 Employees

  • FDT

    Roof Systems
    Lighting Systems

    230 Employees

    FDT

  • Norsilk

    Wood structures
    Exterior- & Interior- design

    150 Employees

12 countries, 950 employees, fascinating technology

Worldwide presence of Donges Group with headquarters in Frankfurt am Main, Germany

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1

Michigan / USA
Kalzip

2

Donges SteelTec

3

Dubai / UAE
Kalzip

4

Gliwice / Polen
FDT

5

Madrid / Spanien
Kalzip

6

Paris / Frankreich
Kalzip, FDT

7

Öjebyn and Stockholm / Schweden
Normek

8

Haydock / UK
Kalzip

9

Nivelle / Belgien
FDT

10

Koblenz / Deutschland
Kalzip

11

Darmstadt / Deutschland
Donges SteelTec

12

Alavus, Naarajärvi and Oulu / Finnland
Normek

13

Mannheim und Hemsbach / Deutschland
FDT

14

Gurgaon / Indien
Kalzip

15

Frankfurt am Main / Germany
Donges Group Headquarters

16

Gorgonzola / Italien
Kalzip

17

Vantaa office, Finland HQ
Normek

18

Boulleville office, France HQ
Norsilk

Sales offices: Donges SteelTec, Kalzip, Normek, FDT, Norsilk

Production: Donges SteelTec, Kalzip, Normek, FDT, Norsilk

Facts

Steel Construction – Roof Systems – Facade Solutions

  • The Donges Group results from the solidarity of its brands. The success is based on the advantage each brand achieves from this collaboration
  • Synergy as a recipe for collective success: The Donges Group bears the responsibility for the effective use of all advantages associated with the Group
  • For the success of the whole, the Donges Group aims to promote the well-being of the brand community as well as that of each individual brand
  • Innovative and high-quality products in steel construction, roof systems and facade solutions
  • Outstanding references from well-known customers
  • High degree of awareness due to international positioning
  • Significant market player with EUR 280 million turnover
  • Market-specific know-how provided by approx. 950 experienced and qualified employees worldwide

Customer value creation

as top priority – resulting benefits from connecting individual companies to a group:

Adding value to our customers is our top priority

  • complete service package consisting of product and associated services, such as training courses, service specifications and drainage calculations
  • Enlargement of the applicable product range
  • Homogeneous target group orientation of Kalzip and FDT sales employees
  • Cross-selling for products in the areas of facades and roof products
  • Very high quality of roof products
  • Expansion of the customer base through expanded sales territory

Member of the Donges Group: