Founded in 1966, Amalga Composites, Inc., Milwaukee Wisconsin, is a leader in the design, engineering and manufacturing of fi ... lament wound composite products. Our products include Black Amalgon cylinder tubing, custom engineered products, military composite products, fiberglass epoxy tubing, reservoir quality tubing, rollers and cores. Doctoral-level engineering provides the design expertise to meet the toughest requirements and also offers immediate technical customer support from prototype through production. ACI can manufacture diameters up to 42 inch and lengths up to 30 feet. ACI has a full service machine shop. read more