Mueller Industries is a manufacturer of copper, brass, aluminum, and plastic products for transportation, automotive, industrial, and other industries. It operates through 3 segments: Piping Systems, Industrial Metals, and Climate. The Piping Systems segment manufactures copper tubes, fittings, line sets, cross-linked polyethylene (PEX) plumbing and radiant systems products, and plastic injection tooling. The Industrial Metals segment manufactures brass rod, copper bar, and copper alloy shapes, plumbing brass, valves, and fittings, cold-form aluminum and copper products, as well as steel, brass, and cast iron impacts and castings, brass and aluminum forgings, valves, fluid control solutions, and gas train assemblies. The Climate segment designs and manufactures valves, protection devices, brass fittings, tubular assemblies and fabrications, high-pressure air-conditioning and refrigeration components and accessories, coaxial heat exchangers, twisted tubes, and insulated HVAC duct systems.