In the context of today’s industrial landscape, the optimization of production processes is a strategic imperative for companies that want to maintain competitiveness on the global market. In this context, the Lean Manufacturing paradigm emerges as a fundamental management philosophy, aimed at eliminating waste and maximizing customer value. This paper aims to examine the application of the principles of Lean Manufacturing within an Italian manufacturer of stainless-steel carpentry, located in Northern Italy. The analysis was enriched by the direct experience of the author: the pages contained in this document are the result of a project carried out between March and September 2023 at the industrial plant of Canelli, province of Asti, leader in the production of stainless-steel machinery for the bottling and packaging sector.