Refinement of the ferrite grains provides a promising approach to simultaneously improving both the ‎strength and the toughness of steels. Among recent techniques to obtain ultrafine ferrite, dynamic ‎strain induced transformation (DSIT) is used. This type of treatment is sensitive to steel ‎composition, deformation temperature, the prior austenite grain size, strain and cooling rate.‎This work is aiming to improve the mechanical properties of steels using ferrite grain refining ‎through trials on industrial scale using a compact strip production plant (CSP) with hot strip mill ‎‎ (HSM) containing six stands F1 – F6 in EZDK Steel Company. The chemical composition of the ‎trials was ~0.05% C, 0.05% Si and 0.5% ‎Mn. The effect of the finishing deformation temperature at the last rolling stand (F6) on the ‎microstructure and mechanical properties was studied. In addition the effect of changing strain at ‎the final two rolling stands (F5 and F6) was carried out during trials. Comparing the traditionally processed steel which resulted in a ferritic grain size of 11µm with the processed fine grained (~5µm) steel, the yield stress has increased by 23% and the tensile strength increased by 12% on the expense of only 5% decrease in the ductility. However, the impact energy has improved by 7.5 %.