Ferrous Metal Foundries
Key Figures
Figures are published for NAICS 33151 directly.
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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.
Source: US Census Bureau, 2017 NAICS Definitions. Public domain.
Which code does this activity belong in?
Ferrous Metal Foundries comprises establishments that pour molten iron and steel into molds to produce castings from purchased metals. The boundary with Nonferrous Metal Foundries lies in the type of metal being cast: ferrous establishments work exclusively with iron and steel, while nonferrous foundries cast metals other than iron and steel. Foundries performing extensive finishing operations such as milling or machining castings to tight tolerances are classified based on their final product rather than in this foundry category.