In 1825 Johann Wilhelm Windgassen (1779–1852) founded the Windgassen Friedrich-Wilhelms-Hütte in Troisdorf at the confluence of the Agger and Sieg . Johann Jakob Langen (1794–1869) acquired the blast furnace and ironworks in 1843.
The roller specialist and engineer Louis Mannstaedt (1839–1913) acquired the plant in 1911 and relocated his company Façoneisen-Walzwerk L. Mannstaedt & Cie. AG from Kalk to Troisdorf. From 1911 to 1913 renovations were carried out. For the workers that Mannstaedt brought from Kalk, three factory settlements were created: Black Colony , Red Colony and Casino Colony .
In 1923 Peter Klöckner (1863–1940) took over Mannstaedt-Werke, the company was renamed Klöckner-Mannstaedt-Werke AG .
During the Second World War, from March 9 to April 12, 1945, all factory facilities were damaged by air raids. In 1948 it was dismantled by the Allies.
In 1986 the company became part of Klöckner Stahl GmbH.
From September 1, 1990, the Mannstaedt plant belonged to the British Steel company , which became part of the Corus Group . From January 1, 2000, the plant operated under the name Mannstaedt-Corus GmbH.
Mannstaedt GmbH has been part of the Georgsmarienhütte group of companies (GMH Group) since 2006 . On December 14, 2017, the brand appearance was changed, in which the "individual location name forms a visible unit with the GMH Group" with the joint logo.
- mannstaedt.de - Official website of Mannstaedt
- Mannstaedt GmbH. In: City of Troisdorf. Retrieved November 9, 2019 .
- history. In: mannstaedt.de. Retrieved July 9, 2018 .
- Jürgen Weise: Mannstaedt, Ludwig Emil. In: New German Biography . No. 16 , 1990, pp. 76 f . ( deutsche-biographie.de [accessed on July 9, 2018]).
- Friedrich-Wilhelms-Hütte district. In: City of Troisdorf. Retrieved July 9, 2018 .
- GMH Group is growing closer together. In: mannstaedt.de. December 14, 2017, accessed November 9, 2019 .