A. M. CASTLE & CO is a specialty metals and plastics distribution company serving customers on a global basis. The Company operates in two segments: Metal and Plastics segment. The Company provides a range of products and processing and supply chain services to an array of customers, principally within the producer durable equipment, oil and gas, aerospace, heavy industrial equipment, industrial goods, construction equipment, retail, marine and automotive sectors of the global economy. The Company focuses is placed on the aerospace and defense, oil and gas, power generation, mining, heavy industrial equipment manufacturing, marine, office furniture and fixtures, safety products, life sciences applications, transportation and general manufacturing industries. As of December 31, 2011, the Company had 48 operational service centers located throughout North America (44), Europe (three) and Asia (one). On December 15, 2011, the Company acquired 100% interest in Tube Supply, Inc.