Originating from a study on Portuguese design history, this article explores into the emergence of tubular steel furniture in Portugal. The research review allowed identifying some influencing factors towards the earlier applications of tubular steel in Portuguese furniture. Through mechanized production, European standardized furniture assumed different roles in the living environment. Practicality and functionality trumped aesthetic beauty. The dissemination of the European modern style gained traction, significantly aided by the rising popularity of tubular steel furniture. Concurrently, certain Portuguese entrepreneurs began recognizing machinery as a pivotal instrument for production development. Beyond enabling mass production, machinery facilitated faster, more efficient, and cost-effective manufacturing, allowing for a diverse range of pieces in various materials. In Portugal, pioneers in this furniture typology were primarily driven by hygienic and economic trends, specifically in the realm of interior design for sanatoriums. In the 1930s, the imperative for social infrastructure to combat tuberculosis necessitated the fabrication of hospital furniture and equipment - chairs, armchairs, tables, and desks. This demand spurred the modernization of the metallurgical industry, resulting in the production of chrome-plated metal tube furniture to cater to national health programs. Evidently, the inception of metal tube furniture design did not originate from architects or decorators. Portuguese designers drew inspiration from foreign furniture catalogs, eventually popularizing the utilization of tubular steel in industrial production. Over time, metal became a staple in Portuguese industrial design due to its functional concerns and low production costs resulting from serial manufacturing. However, it wasn’t until the 1960s that metal furniture found its way into office settings, marking the onset of the first design collaborations within factories employing a structured design project methodology.