Considering that companies are concerned with sustainable management in their production processes, it ir of importance to check the production processes in a metalworking industry, with an emphasis on the cleaner production process as a tool in business decision making. In this paper we propose the suggestion of a system of contínuos improvement using the cleaner production in the machinery departamento in a metalworking industry that produces agricultural implements in the north of Rio Grande do Sul. The participant observation method for the description of production processes with semi-structured interviews, with contente analysis as results. The use of this tool was satisfactory, since there was decrease of componentes in the production as raw material, and improvement in the productive processes. It should be noted that cleaner production generates savings in manufacturing processes, eliminating waste such as raw materials, waste, water and energy, generating financial and sustainable returns to companies.