Zwahlen & Mayr SA operates in two core areas: the production of welded stainless-steel tubes and steel construction, serving both Swiss and international markets. Under its ZM Tubes brand, the company manufactures various stainless steel and nickel alloy tubes, encompassing both welded and redrawn types. These highly specialized tubes are essential components across a diverse range of demanding industries, including conventional and nuclear power generation, chemical and petrochemical processing, petroleum refining, pulp and paper manufacturing, air treatment, dairy production, automotive and aerospace sectors, mechatronics, pneumatic systems, oil and gas exploration, and instrumentation, as well as pharmaceutical, food, and general chemical applications. Furthermore, Zwahlen & Mayr undertakes steel fabrication for significant construction projects, such as bridges, buildings, and other bespoke structural endeavors. Founded in 1881, the firm maintains its headquarters in Aigle, Switzerland, and functions as a subsidiary of Cimolai SpA.