12/06/2026
The trained eye spots it right away: the slab.
A slab is a compact, rectangular block of steel that is continuously cast in a continuous caster at temperatures above 1,000 °C and then cut into lengths.
After being temporarily stored in slab yards and mostly cooled down, they are sent to the rolling mill. Slabs serve as the raw material for producing hot strip, which is then wound into coils.
The size and properties of slabs vary from plant to plant and depend on their final application. At our continuous caster 4 in Duisburg-Bruckhausen, slabs with the following dimensions are mainly produced for the automotive industry:
📏 Slab width: 90–180 cm
📏 Slab thickness: 25.7 cm
And how heavy is a steel slab like this? It all depends on its size. It can weigh anywhere between 10 and 40 tons. 🏋️
The photo was taken in our slab preparation area. This is where slabs are stored and prepared for further processing in the hot strip mill. At this stage, their surface quality is inspected and, if necessary, the slabs are deburred or ground.