Rocky Mountain Steel Mills

Pueblo, Colorado

Established in 1881, Rocky Mountain Steel Mills (then known as the Colorado Fuel and Iron Company) helped to build the American west by providing affordable steel and iron to the western territories and the nation’s expanding rail systems. Today, Rocky Mountain Steel Mills (RMSM) is a Specialty Product Mini Mill that produces the finest steel products available, including rail, seamless pipe, rod and coiled reinforcing bar. We also offer high-quality semi-finished products that can be delivered to each customer’s exact specifications.

Rocky Mountain Steel Mills operates three facilities:

Our facilities feature some of the most sophisticated equipment in the world. Our rod/bar mill is capable of producing high-quality rods at speeds of up to 23,600 feet of rod per minute. And our innovative rail manufacturing process results in the hardest, most durable rails produced anywhere.

Learn more about Rocky Mountain Steel Mills' commitment to safety, rewarding careers, our communities, and learn about our management team or read current and past press releases by visiting our company pages.

Rocky Mountain Steel Mills products

All of Rocky Mountain Steel Mills' products follow strict quality assurance procedures and testing—from metallurgical analysis, to visual and in-line ultrasonic inspection, to measurements and sample testing. Every product that leaves our mills complies with or exceeds industry standards.

Read the RMSM Terms and Conditions.

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