Welcome to Mannstaedt GmbH!

We are a world leader in hot-rolled steel special profiles. Our expertise is born from decades of experience in many fields: engineering, metallurgy, roll design, hot rolling and further processing. Our steel profiles make the impossible possible.

Plan your journey


File nameFile size
Mannstaedt GmbH Certificate RINA for Bulb Flats 3,34 MB Download
Mannstaedt GmbH DNV-GL Certificate for Bulb flats 360,61 KB Download
Mannstaedt GmbH Lloyd's Register Certificate for Steel Profiles 104,53 KB Download
File nameFile size
Mannstaedt GmbH Lloyd's Register IATF 16949:2016 222,08 KB Download
Mannstaedt GmbH Lloyd's Register ISO 14001:2015 and ISO 50001:2018 130,73 KB Download
Mannstaedt GmbH Lloyd's Register ISO 9001:2015 218,59 KB Download
File nameFile size
Mannstaedt GmbH Special Profiles 1.001,41 KB Download
Mannstaedt GmbH Special profiles for the materials handling industry 485,39 KB Download
File nameFile size
Mannstaedt GmbH DoP hot rolled achor channel in stainless steel 3,43 MB Download
Mannstaedt GmbH DoP hot rolled sections for special applications in steel grade S235JR 3,61 MB Download
Mannstaedt GmbH DoP hot rolled sections for special applications in steel grade S275 9,29 MB Download
Mannstaedt GmbH DoP hot rolled sections for special applications in steel grade S355 9,55 MB Download
Mannstaedt GmbH DoP hot rolled zees with round edges in steel grade S235JR 3,49 MB Download
File nameFile size
Mannstaedt GmbH Betriebsstillstände/shutdowns 2020 91,80 KB Download
Mannstaedt GmbH Company standard 251,74 KB Download
Mannstaedt GmbH General Terms and Conditions of Delivery and Payment 329,56 KB Download

Your contacts in Sales

Alexander Trost

Head of Sales and SCM Mannstaedt GmbH

Dieter Tondar

Sales Director of Mannstaedt GmbH

Steel moulded to your individual needs

Special steel profiles

Producing hot-rolled special profiles in customized geometries and steel grades is our core competence. These products save you time and money, because no further processing and finishing is needed. Our made-to-order shapes and custom steel properties also reduce the weight of your end products.They improve dimensional accuracy in general and enhance the mechanical properties of the components they are used in. Last but not least, our special profiles provide surfaces that meet the most exacting quality requirements.

Developing solutions for any requirement

We always meet our customers’ requirements, whether they are looking for special material properties or have particular expectations in terms of straightness, drilling, surface quality, or the lengths of their bars or pieces. No other manufacturer of special profiles can rival the variety of products and materials we offer.

Committed to more than just steel

Taking responsibility – not just for ourselves, but also for others – is one of our top priorities. This attitude shapes the way we think and everything we do. Preserving the environment and climate as well as protecting our staff and the people around us are key concerns for us as a company. That’s why we follow standards that go above and beyond our certifications.

Our production plants

Cutting-edge rolling mills for a great variety of profiles

Our rolling mills with a capacity of 200,000 tonnes enable us to manufacture profiles to suit virtually any requirement and area of application. We produce special profiles with weights of 2 kg/m to 180 kg/m, thicknesses of 2 to 6 mm and bar lengths of up to 24 metres.

Our rolling mills:
Heavy profiles

  • Product range: 15 – 180 kg/m
  • Max. width: 400 mm
  • Min. thickness: 6 mm
  • Bar length: Up to 24,000 mm

Light profiles

  • Product range: 2 – 35 kg/m
  • Max. width: 180 mm
  • Min. thickness: 2 mm
  • Bar length: Up to 18,000 mm"

Our development centre – Always one step ahead

We are consistently optimising our profiles and developing them further. Engineers, materials experts, technicians, designers, lab staff and other specialists work hand in hand to develop tomorrow’s solutions today. Our fully equipped lab tests geometries, material properties and surfaces in order to make our steel even better than it already is. We also invest judiciously in our production plants to ensure that we can keep developing our pioneering ideas for many years to come.

Further processing that meets highest standards

When it comes to dimensions, tolerances, materials and surface properties, Mannstaedt’s production team is constantly extending the limits of what is possible. Just like the other areas of our business, our further processing services produce results that comply precisely with our customers’ requirements. No matter what the customer expects, we always find the best possible result – together. In addition to hot rolling, we also offer a range of other processing steps: drawing, welding, sawing to size, blasting, milling and coating.

Certified quality

Here at Mannstaedt, all our production sequences follow reliable processes and comply with all the relevant international standards: DIN EN ISO 9001, DIN EN ISO 14001, DIN ISO/TS 16949 and DIN EN ISO 50001.

A real future – our history

  • 1825

    Johann Wilhelm Windgassen buys the plot of land that has remained the company premises until today and founds Windgassen Friedrich-Wilhelms-Hütte.

  • 1911

    Entrepreneur Louis Mannstaedt takes over the Façoneisen rolling mill and founds Louis-Mannstaedt & Cie. AG.

  • 1923

    The company is bought by the Klöckner corporation. At that time, already around 4,000 people work at the mill.

  • 1986-1999

    Ownership of the company changes hands several times. In 1986, the company becomes part of Klöckner Stahl GmbH. British Steel plc. takes it over in 1990.

  • 2006

    The plant returns to German ownership, in the form of Georgsmarienhütte Holding.

Your contacts in Management

Thomas Friedrich

CFO of Mannstaedt GmbH

Thomas Voß

COO of Mannstaedt GmbH

Careers at GMH Gruppe

GMH Gruppe creates future perspectives in steel – not least of all for its around 7,000 employees. We are continuously looking for new talent and seasoned professionals to join our production, engineering and innovation as well as in business management teams.

Your contacts in Human Resources

Simone Rojahn

Head of HR of Mannstaedt GmbH

Ute Pellenz

Head of Head of Appienticeship, Human Resources Development of Mannstaedt GmbH

How to find us

We look forward to welcoming you. Find the best route to Mannstaedt GmbH here.

Plan your journey

Mannstaedt GmbH

Mendener Straße 51
53840 Troisdorf

Would you like to learn more about our products and solutions? Just contact us!

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Competence Center Mannstaedt


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