DWK and Max Bögl expand strategic partnership for hybrid wind towers

DWK Drahtwerk Köln GmbH, a subsidiary of Saarstahl AG, has signed a new long-term cooperation agreement with Max Bögl Wind AG, further expanding a partnership that has been in place since 2015.

The agreement significantly increases delivery and purchase volumes of prestressing steel wire and strengthens the companies’ strategic collaboration for the coming years.

Securing Material Supply for Hybrid Tower Construction

Under the new framework, Max Bögl secures long-term supply of prestressing steel wire used in the construction of its hybrid wind turbine towers. The material plays a critical role in ensuring structural integrity by placing concrete tower segments under compressive stress, thereby enhancing stability and resilience.

Max Bögl’s hybrid towers combine a steel upper section with a lower section made of environmentally optimized concrete, which can reach heights of up to 120 meters. The concrete base consists of up to 35 individual rings stacked using a dry-joint system. Prestressing tendons manufactured from DWK wire transfer turbine loads efficiently through the concrete structure.

Each tower contains up to 24 tendons and requires approximately 200 kilometers of prestressing steel wire.

Growing Demand Driven by Taller Towers

With plans to develop even taller hybrid towers, Max Bögl expects rising demand for prestressing steel wire in the coming years. The expanded agreement therefore includes higher production volumes, providing both companies with greater planning security.

The long-term arrangement supports DWK’s ongoing investment in production capacity and advanced manufacturing technology, while enabling Max Bögl to maintain quality standards in an expanding wind energy market.

Source and Photo: Saarstahl