2022 NAICS national industry in sector 31-33 Manufacturing
331221 Rolled Steel Shape Manufacturing
NAICS 331221 is the US industry code for rolled steel shape manufacturing. This U.S.
- Code
- 331221 (2022 NAICS)
- Title
- Rolled Steel Shape Manufacturing
- Part of
- Rolling and Drawing of Purchased Steel
- SBA small business limit
- Up to 1,000 employees
- Closest UK SIC
- 24100 (details)
Changes coming. The NAICS 2027 revision applies to data from 1 January 2027, and SBA proposed new size standards on 20 August 2026. The values on this page are the ones in force today; we update this page when the official files change.
Official definition
This U.S. industry comprises establishments primarily engaged in rolling or drawing shapes (except wire), such as plate, sheet, strip, rod, and bar, from purchased steel.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Making steel and rolling or drawing steel shapes, or manufacturing concrete reinforcing bars in an iron and steel mill are classified in Industry 331110, Iron and Steel Mills and Ferroalloy Manufacturing.
- Drawing wire from purchased steel are classified in U.S. Industry 331222, Steel Wire Drawing.
- Manufacturing fabricated structural metal products from concrete reinforcing bars and fabricated bar joists are classified in U.S. Industry 332312, Fabricated Structural Metal Manufacturing.
Activities listed under 331221
The Census index assigns these 16 activities to this code. If your business matches one, this is your code.
- Bars, concrete reinforcing (rebar), made from purchased steel in steel rolling mills
- Bars, steel, made from purchased steel in cold rolling mills
- Cold rolling steel shapes (e.g., bar, plate, rod, sheet, strip) made from purchased steel
- Concrete reinforcing bar (rebar), made from purchased steel in cold rolling mills
- Concrete reinforcing bar (rebar), made from purchased steel in steel rolling mills
- Corrugating iron or steel in cold rolling mills made from purchased iron or steel
- Ferrous metal powder, paste, and flake made from purchased iron or steel
- Flakes made from purchased iron or steel
- Flat bright steel strip made in cold rolling mills made from purchased steel
- Hot-rolling purchased steel
- Metal powder and flake made from purchased iron or steel
- Nut rods, iron or steel, made in cold rolling mills
- Paste made from purchased iron or steel
- Powder made from purchased iron or steel
- Razor blade strip steel made in cold rolling mills
- Wire, flat, rolled strip, made in cold rolling mills
SBA size standard for 331221
To count as a small business for SBA loans and federal contracts under NAICS 331221, your business (including affiliates) must not exceed 1,000 employees. Check your business.
Source: SBA table of size standards, effective March 17, 2023.
Closest UK SIC 2007 codes
There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 2410), so treat them as a starting point and check the definition.
Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.
Similar codes to compare
Data last changed November 14, 2026. How this page is built.