2022 NAICS industry in sector 31-33 Manufacturing
33151 Ferrous Metal Foundries
NAICS 33151 is the US industry code for ferrous metal foundries. It covers establishments primarily engaged in pouring molten iron and steel into molds of a desired shape to make castings.
Official definition
This industry comprises establishments primarily engaged in pouring molten iron and steel into molds of a desired shape to make castings. Establishments in this industry purchase iron and steel made in other establishments.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Establishments primarily engaged in manufacturing iron or steel castings and further manufacturing them into finished products are classified based on the specific finished product.
Codes in 33151
Data last changed November 14, 2026. How this page is built.