The HRS system simulates the process of the hot rolling for steel long products to the following types of deformation:

- roughing mills for all products,

- intermediate mills for all products,

- pre-finishing mills for rolling of round products, and

- finishing mills for rebars, rounds, squares, and flat bars

The HRS system simulates continuous mills and open mills, for any layout.

The HRS system simulates passes for roughing and intermediate strains in the production of profiles.
The HRS system does not simulate sequences for finishing passes for profiles.