For decades, Koppers has been putting customers first, providing quality products and services to a wide range of industries. Though our products all start out as a form of distilled coal tar, they end up in a variety of manufactured goods, from roofing and tires, to telephone poles, railroad ties and paint. In all instances, customers come back to Koppers because they know they can depend on us for quality, timeliness and attention to detail.

With 35 plants located strategically around the world, Koppers can provide convenient service with built-in efficiencies. Koppers is committed to a world-class safety, health and environmental management system at every location. This assures our employees and neighbors in our communities of a safe workplace and a sound environment.

Koppers serves the aluminum, steel and construction industries with creosote, carbon black and carbon pitch and other essential chemical compounds.

Koppers is the world’s largest producer of treated-wood railroad ties, serving the nation’s top railroad industry with crossties, switch-ties and preplated panels.

At our Harmarville Technical Center, Koppers research and development team, provides comprehensive services for testing and creating new forms of carbon pitch and other chemical products.

Koppers Coal Tar Built-Up Roofing systems are durable, affordable and high-performance, topping some of the most prestigious buildings in the U.S.

Koppers is a supply leader to the transportation, utility and construction industries. Utilities rely on our treated wood poles to support overhead electric lines. Our treated marine and foundation pile materials are used in waterfront structures and commercial construction.