Leeco Steel is a supplier of carbon, HSLA and alloy steels from the premier mills worldwide. Our inventory of extra-high-strength and abrasion-resistant steels is one of the nation's largest, including nonstandard lengths and thicknesses in both metric and imperial measurements.

We've built our reputation on availability of inventory, exceptional quality control, efficient large-scale processing capabilities, expert service, and on time delivery. Our stocking facilities are strategically located on riverways and rail lines, close to producing mills and our customers, which reduces freight costs and enables just-in-time delivery.

The company was founded on Chicago’s West Side in 1882 as Leopold Cohen Iron & Metal. After more than a century of growth, expansion, evolution, and three generations of ownership, Leeco is now headquartered in Darien, Illinois, operates five locations, and is part of the O'Neal Steel family of companies, the largest family-owned metals service center network in the United States.