They are mainly produced by Train 2 at the Belval site, except for the HZ® range, which is produced by the Train Grey at the Differdange site. Train 2 manufactures the AZ® sheet pile range, including one of the widest in the world, the AZ®-800. They are used to retain soil or water in order to build quay walls, dikes, underground parking structures, tunnels, bridges, or road infrastructures.