An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Metals Sector: Primary (NAICS 331) and Fabricated (NAICS 332)

The metals sector is part of the manufacturing sector (NAICS 31 - 33). It includes the fabricated metals industry, the iron and steel industry, the metal casting industry, and the nonferrous metals industry.

Laws and Regulations




Related Technical Information

Top of Page