John Cockerill S.A. is a private Belgian mechanical engineering group headquartered in Seraing, Belgium. With roots dating back to 1817, the company develops and supplies large-scale technological solutions primarily for the industrial, energy, and defense sectors.
Its core activities include the design and manufacture of equipment for steel and metal processing, such as rolling mills, galvanizing lines, pickling and annealing systems, and advanced chemical surface treatment plants for applications in aviation, automotive, and defense. In the energy sector, John Cockerill is a leading provider of heat recovery steam generators, industrial boilers, and alkaline electrolyzers for green hydrogen production, with manufacturing facilities in Europe and Asia. The defense division specializes in weapon systems, including turrets and guns for armored vehicles.
The group operates globally with a strong European base, multiple sites in Belgium, and presence in countries across Asia, the Americas, and Africa. It provides engineering, maintenance, and refurbishment services worldwide. Privately owned, the majority shareholder is the Serin family through Ebenis S.A., with Bernard Serin serving as chairman and his son Nicolas as vice-president. Following its separation from larger steel conglomerates in 2002 and rebranding in 2019, John Cockerill has positioned itself as an innovator in sustainable technologies, particularly decarbonization and hydrogen solutions, while maintaining its heritage in heavy engineering.
With annual turnover exceeding €1.4 billion in recent years and thousands of employees, the company ranks as a significant player in its niche markets, emphasizing innovation, environmental compliance, and international expansion.
Also known as CMI S.A., Cockerill Maintenance & Ingénierie, and John Cockerill Group.
MoU to evaluate low‑carbon ironmaking technologies, skills and local capabilities to develop Gadchiroli as a green steel manufacturing hub.
Integrated plant will combine pickling with acid regeneration, a 6‑high cold mill and Galvalume coating to produce cold‑rolled and coated steel for East Africa.
Project reached FID/NTP and moves into construction. Will use John Cockerill pressurized alkaline electrolysis; first hydrogen expected mid‑2028; plant ties into local Chemical Park and Nobian.
Project will use carbon capture to source biogenic CO2 and has FEED underway; plant due ~2030 to produce 80,000 t/yr eSAF, backed by France 2030/EU fund and planned for replication.
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