Leeco® Steel has spent over a century building its reputation as a premier supplier of carbon, HSLA, and alloy steels . We of ... fer exceptional quality, an expansive inventory, expert service and on time delivery. Leeco Steel is qualified to meet all your steel needs with the highest degree of satisfaction. Leeco Steel was founded on Chicago's West Side in 1882 as Leopold Cohen Iron & Metal. After more than a century of growth, expansion, evolution, Leeco is now headquartered in Lisle, Illinois, operates 13 locations in North America and Mexico, and works globally through Leeco Steel Trading. Leeco Steel is part of the O'Neal Industries family of companies, the largest family-owned metals service center network in the United States. read more