The development of microalloyed steel for the production of reinforcement bars (rebar) seeks to achieve the modernization of reinforced concrete structures and streamline industrialization in civil construction that demands new developments in techniques and applied materials. Rebar is one of the main products used in the production of reinforced concrete all over the world. The optimization of the final application and the necessity to keep production low costs while attempting to combine high resistance with great ductility in a material with weldability characteristics, became a great challenge for the producers of rebars. Applying the technology developed throughout the last 50 years, this work offers the alternative of using vanadium and niobium microalloyed steel to produce large quantities of rebars in rolling mills. Upon completion these rebar are used in coils capable of meeting the most rigorous demands of the civil construction industry. The experiments made in an industrial environment, applied steels with 0.14 percent to 0.20 percent of vanadium and up to 0.04 percent of niobium. The results met the most demanding standards in the world-wide market.