Mueller Industries, Inc. is a manufacturer of copper, brass, aluminum and plastic products. The Company manufacture a range of products, including copper tube and fittings; line sets; PEX plastic tube and fittings; steel nipples; brass rod, bar, and shapes; aluminum and brass forgings; aluminum impact extrusions; compressed gas valves; refrigeration valves and fittings; pressure vessels; coaxial heat exchangers; and insulated flexible duct systems. It operates in the United States and in Canada, Mexico, Great Britain, South Korea, the Middle East and China. It has three segments. The Piping Systems segment is composed of Domestic Piping Systems Group, Great Lakes Copper, Heatlink Group, European Operations, Trading Group, Jungwoo-Mueller and Mueller Middle East. The Industrial Metals segment is composed of Brass Rod, Impacts & Micro Gauge and Brass Value-Added Products. The Climate segment is composed of Refrigeration Products, Westermeyer, Turbotec, Flex Duct and Linesets, Inc.