factory where metal castings are produced
"The historic foundry still operates today, churning out heavy steel beams for the city's new skyscrapers."
A facility that melts metals in special furnaces and pours the molten metal into molds to make products. Foundries are usually specified according to the type of metal dealt with: iron foundry, brass foundry, etc.
"The local brass foundry melted down the old pipes yesterday to cast a new set of decorative door handles for the historic building."