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

    Learn moreVisit Website


  • 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.

    Learn moreVisit Website


  • 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.

    Learn moreVisit Website


  • For roofs around the world.

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

    Learn moreVisit Website



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


    Learn moreVisit Website
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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 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, NORDEC, 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.

Strategy

  • Steel Bridges

  • Steel Structures

  • Roof Systems

  • Facade Systems

  • Wood Structures

Following the successful completion of the restructuring process and five completed add-on acquisitions – Kalzip, NORDEC, 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.

  • Donges SteelTec

    Steel Bridges
    Steel Structures

    180 Employees

  • Kalzip

    Roof Systems
    Facade Systems

    170 Employees

    Kalzip

  • NORDEC

    Steel Bridges
    Steel Structures
    Facade Systems

    600 Employees

  • FDT

    Roof Systems
    Lighting Systems

    230 Employees

    FDT

  • SCW - Smart Curtain Wall

    Facades
    Complex 3D Design
    Glass Roof - Skylight

    50 Employees

14 countries, 1400 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
NORDEC

8

Haydock / UK
Kalzip

9

Nivelle / Belgien
FDT

10

Koblenz / Deutschland
Kalzip

11

Darmstadt / Deutschland
Donges SteelTec

12

Alavus, Naarajärvi and Oulu / Finnland
NORDEC

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
NORDEC

18

Boulleville office, France HQ
Norsilk

Sales offices: Donges SteelTec, Kalzip, NORDEC, FDT and Norsilk

Production: Donges SteelTec, Kalzip, NORDEC, FDT and 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 400 million turnover
  • Market-specific know-how provided by approx. 1400 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

Management

Donges Group

The management of the Donges Group consists of personalities who, with their many years of expertise and practical experience, actively accompany the development of the companies.

Dr. Wolf Cornelius

CEO

Dr. Wolf Cornelius

CEO

2022 – today CEO Donges SteelTec GmbH

2008 – today multiple functions

2000 – 2007 Technical Manager

1997 – 2000 Orthmann & Herbst-Kettner GmbH / Crown Simplimatic GmbH Hamburg – CEO
1993 – 1997 Piepenbrock Verpackungstechnik – CEO
1990 – 1993 KHS- SEN Maschinenbau AG – Plant Manager
1986 – 1990 Schenk Filterbau GmbH, Technical manager
1980 – 1985 Johann Stahl Apparatebau, Manager large tank construction
1976 – 1980 Preussag Metall – Operations Manager
1969 – 1975 Schering AG – Process Development Group (PhD)

Andreas Schriewer

Head of Law and Human Resources Donges Group

2019 Head of Law and HR der Donges Group

2002 – 2019 Head of Legal and Personnel at Donges Stahlbau GmbH, later Donges SteelTec GmbH

1999 – 2002 Company lawyer

1995 – 1999 Lawyer in the law firm Dr. Bittorf and colleagues in Coburg

Andreas Schriewer

Head of Law and Human Resources Donges Group

Member of the Donges Group: