Mueller Industries Inc. MLI

What this company does

Mueller Industries, Inc. manufactures a broad range of products: copper tube and fittings, line sets, steel nipples, brass rod, bar and shapes, aluminum and brass forgings, aluminum impact extrusions, refrigeration valves and fittings, compressed gas valves, pressure vessels, insulated flexible duct systems, and wire and cable solutions. Its operations are located throughout the United States and in Canada, Mexico, Great Britain, South Korea, the Middle East, and China. Its reportable segments, each composed of certain operating segments aggregated primarily by the nature of products offered, are the Piping Systems, Industrial Metals, and Climate segments. Within the Piping Systems segment, the Domestic Piping Systems Group manufactures and distributes copper tube, fittings, line sets, and pipe nipples, and resells steel pipe, brass and plastic plumbing valves, malleable iron fittings and faucets, and plumbing specialties. Within the Industrial Metals segment, Brass Rod manufactures a broad range of brass rod and shapes in a variety of standard and lead-free alloys sold primarily to OEMs in the industrial, HVAC, plumbing, and refrigeration industries. Within the Climate segment, Refrigeration Products designs and manufactures valves, protection devices, and brass fittings for various OEMs in the commercial HVAC and refrigeration markets. As of December 27, 2025, the Company employed approximately 4,832 employees, of which approximately 1,820 were represented by various unions. The Company was incorporated in Delaware on October 3, 1990.

Written from the business description in MUELLER INDUSTRIES INC's annual report to the U.S. Securities and Exchange Commission, filed 25 February 2026. Every sentence was checked against that document before publication.