NAICS Code 331513 — Steel Foundries (except Investment)

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is one of 3 national industries under 33151 (Ferrous Metal Foundries).

Code	`331513`
Title	Steel Foundries (except Investment)
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	700 employees

Official definition (2022 NAICS)

This U.S. industry comprises establishments primarily engaged in manufacturing steel castings (except steel investment castings). Establishments in this industry purchase steel made in other establishments.

Is a business under 331513 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 331513 qualifies as a small business if it does not exceed 700 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 331513 sits in the hierarchy

Level	Code	Title
Sector	`31-33`	Manufacturing
Subsector	`331`	Primary Metal Manufacturing
Industry Group	`3315`	Foundries
NAICS Industry	`33151`	Ferrous Metal Foundries
National Industry	`331513`	Steel Foundries (except Investment)

Related SIC codes

Via the official U.S. Census concordance (1987 SIC ↔ NAICS), shown only where the industry definition is unchanged in NAICS 2022.

SIC code	Title
`3325`	Steel Foundries, Not Elsewhere Classified

Related National Industry codes

331511 — Iron Foundries
331512 — Steel Investment Foundries

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Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.