Liberty House Group announced a conditional agreement to buy four European steel plants, a transaction that would take the company’s total rolling capacity to over 15 million metric tons per year. Liberty made a binding offer to acquire ArcelorMittal’s major integrated works at Galati in Romania and Ostrava in the Czech Republic, along with rolling mills at Skopje in Macedonia and Piombino in Italy.

Adding these steel plants more than doubles Liberty’s global metal manufacturing capacity, which includes a strong position in the U.K. as a steel and aluminum supplier to the automotive, aviation and engineering sectors. The new European assets would boost Liberty’s capacity across a full range of flat and long products.

This announcement follows the recent roll-out of Liberty’s investment program in France, where it acquired the country’s last remaining aluminum wheelmaker and agreed to purchase Europe’s largest aluminum smelter at Dunkerque.