- Constanze Lang has taken over the commercial management from Andreas Betzler.
- The business graduate has approximately 20 years of management experience within the Salzgitter Group.
Change in management at Mannesmann Line Pipe GmbH and Mannesmann Grossrohr GmbH: Constanze Lang joined the management board of the Salzgitter AG companies on July 10, 2026. Together with her fellow managing director, Dr. Carsten Holste, she leads both Salzgitter subsidiaries and is responsible for the commercial division. She succeeded Andreas Betzler, who moved to the management board of Hüttenwerke Krupp Mannesmann as managing director for controlling.
The business graduate has been with the Salzgitter Group since August 2003. After holding various positions in controlling, she took over as Head of Controlling at Mannesmann Line Pipe GmbH in July 2006. Since April 2012, she has been responsible for the company’s commercial functions as Commercial Director. In this role, she has played a key role in shaping and guiding the company’s economic development over many years.
Amit Bedi, member of the Group Management Board of the Salzgitter Group and Head of the Steel Processing Division, explained the new appointment:
“With Constanze Lang, a proven expert in finance and corporate management from within our own ranks is taking over the commercial management of Mannesmann Line Pipe GmbH and Mannesmann Grossrohr GmbH. Thanks to her many years of experience and her in-depth knowledge of our markets, customers and processes, she brings the best qualifications to continue the successful development of both companies together with her fellow managing director, Dr. Carsten Holste, and to provide important impetus for their further strengthening.”
I would like to express my sincere thanks to Andreas Betzler for his successful work over the past years. He has played a crucial role in shaping the economic development of both companies, strengthening their position during challenging market phases, and providing important impetus for their competitiveness and future viability. I wish him every success in his new role on the management board of Hüttenwerke Krupp Mannesmann GmbH and look forward to our continued collaboration within the Salzgitter Group.
Mannesmann Line Pipe GmbH and Mannesmann Grossrohr GmbH belong to the steel processing division of the Salzgitter Group and are important partners for the expansion and modernization of energy and infrastructure networks.
Mannesmann Line Pipe GmbH, with plants in Siegen and Hamm, specializes in high-frequency inductive longitudinal welded steel pipes and hollow sections, offering a wide range of dimensions and grades. These products are used in hydrogen and natural gas networks, district heating systems, and drinking water pipelines, among other applications. They are also used as structural elements in steel construction, as well as in mechanical and plant engineering.
Mannesmann Grossrohr GmbH, based in Salzgitter, produces spiral-welded large-diameter pipes with diameters of up to 66 inches. These products are used worldwide for transporting energy carriers, energy storage, and in other applications.