Diamond Manufacturing Company

About Diamond Manufacturing Company

Diamond Manufacturing is a wholly owned subsidiary of Reliance Steel & Aluminum, North America’s largest provider of solutions for metals. With more than 50 machines on location, Diamond Manufacturing is capable of perforating over 4,000 different patterns at tolerances tighter than industry standards. As your one-stop solution from material to finished product, Diamond serves the needs of volume OEM buyers, local job shops, and architects throughout six locations in the United States.