Diamond Manufacturing Company
Fabricated Metal ProductsPennsylvania, United States51-200 Employees
Diamond Manufacturing Company operates in the fabricated metal products sector, focusing on precision perforation of metal and related fabrication. It serves as a single-source supplier from material to finished product, addressing the needs of volume OEM buyers, local job shops, and architects, with operations across six locations in the United States. The company is a wholly owned subsidiary of Reliance Steel & Aluminum, aligning it with North America’s largest metals-solutions provider. Based in Wyoming, Pennsylvania, the operation reflects a mid-sized manufacturing profile. In October 2022, Diamond Manufacturing expanded its Wyoming facility by adding a 30,000-square-foot production space, broadening its manufacturing capacity. The company maintains a website at diamondman.com.