Incorporated in Pennsylvania in 2008, PRCO America makes high-temperature refractory products for iron and steel producers and other demanding industrial furnaces. Based in Pittsburgh and operating a Kentucky production facility since 2022, the company is part of Puyang Refractories Group and produces magnesia-carbon brick in the United States, reshoring jobs once lost to overseas competition. Its connection to the group’s mines and processing plants also gives PRCO America a direct North American source of high-purity refractory raw materials.
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Resco Products, IncResco Products, Inc. manufactures refractory materials and products for high-temperature industrial applications. The company describes itself as a privately owned business headquartered in Pittsburgh, Pennsylvania, and says it joined RHI Magnesita in January 2025. Its refractory offerings serve industries including steel, cement, lime, metals, petrochemical processing, and power generation.TARENTUM, PA
TYK America, IncTracing its roots to Swank Refractories, founded in 1856, TYK America manufactures refractory materials and equipment for the iron, steel and aluminum industries at its Pennsylvania plant. The wholly owned U.S. subsidiary of Japan’s TYK Corporation was established in 1982 and combines Swank’s long history in steel-pouring refractories with Japanese refractory technology, including isostatic products for continuous casting. TYK America also develops technical systems for steelmaking operations and exports products and technical information through TYK’s international network.CLAIRTON, PA
HWITracing its roots to Pittsburgh’s Star Fire Brick Company in 1865, HWI manufactures refractory products and engineered services that protect equipment in high-temperature industries. Now a member of the Calderys Group, the company operates 25 manufacturing sites and 20 distribution centers across its Americas footprint, with nearly 2,000 employees. HWI is particularly known in the iron and steel industry for inventing COMANCHE® ladle refractories and for its Advanced Technology and Research Center, described as the largest U.S. facility devoted to refractory development, quality assurance, and failure analysis.PITTSBURGH, PA
REFRACTARIOS KELSEN S.ABorn as a family company in the Basque Country in the 1960s, Refractarios Kelsen makes dolomitic refractory materials for the iron and steel industry. Based in Gipuzkoa, it has grown into a European benchmark with 145 workers, annual production capacity of 125,000 tonnes and an integrated supply of its own high-purity dolomite through the Calcinor Group. Since 2025, its manufacturing presence has extended to Tarentum, Pennsylvania, linking Kelsen’s European expertise with a local U.S. steelmaking tradition dating to the 1960s.TARENTUM, PA