Key Takeaways
• thyssenkrupp Steel's No. 4 hot strip mill in Duisburg resumed trial production in June 2026, approximately seven months after a devastating explosion & fire in October 2025 caused severe damage to furnaces & roof structures, marking a significant milestone in the facility's recovery.
• The restoration program incorporated substantive technical upgrades beyond mere repair, including enhanced furnace systems, improved surface quality controls, & a digitalized slab logistics platform that positions the Duisburg complex among Europe's most technologically advanced flat steel production networks.
• The recommissioned mill produces a broad portfolio spanning standard construction grades to high-strength premium automotive & energy sector steels, reinforcing thyssenkrupp Steel's role as a strategically critical supplier to European industrial customers at a time of heightened supply chain sovereignty awareness.