It was observed that the combined effect of a greater rolling oil volume when compared to the usual industrial practice (+30%:F2 → 230 mL/min, F3 → 220 mL/min and F4 → 180 mL/min), larger slab thickness (32 mm) and smaller amount water flow of interstand cooling (38 m³.h–1), reduces the tertiary scale thickness. Besides, a smaller crack density in the samples that were rolled with flow oil at +30% and with smaller oxide scale thickness was observed.