Ampco-Pittsburgh Corporation (AP)

Its largest business is Forged and Cast Engineered Products, which makes forged hardened steel rolls, cast rolls, and open-die forged components. These products are used in metal rolling and forming operations, including mills that process steel, aluminum, and other metals. Mill rolls are mission-critical consumables: they must withstand repeated pressure, heat, and wear while helping customers maintain product quality and production efficiency. This gives Ampco-Pittsburgh exposure to capital spending, maintenance cycles, and production levels across global metals markets.

The company also operates an Air and Liquid Processing segment through businesses including Aerofin, Buffalo Air Handling, and Buffalo Pumps. This segment supplies custom-engineered heat exchange coils, air handling systems, and pumps for industrial, commercial, institutional, and naval applications. Its products are typically tailored to customer specifications rather than sold as standard commodity equipment.

Ampco-Pittsburgh’s business profile combines cyclical end-market exposure with specialized manufacturing expertise. Revenue is led by the forged and cast products division, but the air and liquid processing operations add diversification across HVAC, process cooling, and fluid-handling markets. Investors generally view the company as a small industrial manufacturer tied to metals production, infrastructure investment, and the replacement demand created by wear-intensive equipment.