2022 NAICS national industry in sector 31-33 Manufacturing
332312 Fabricated Structural Metal Manufacturing
NAICS 332312 is the US industry code for fabricated structural metal manufacturing. This U.S.
- Code
- 332312 (2022 NAICS)
- Title
- Fabricated Structural Metal Manufacturing
- Part of
- Plate Work and Fabricated Structural Product Manufacturing
- SBA small business limit
- Up to 500 employees
- Closest UK SIC
- 25110, 30110, 30120 (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 fabricating structural metal products, such as assemblies of concrete reinforcing bars and fabricated bar joists.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing concrete reinforcing bars in an iron and steel mill are classified in Industry 331110, Iron and Steel Mills and Ferroalloy Manufacturing.
- Manufacturing metal windows and doors are classified in U.S. Industry 332321, Metal Window and Door Manufacturing.
- Manufacturing metal studs are classified in U.S. Industry 332322, Sheet Metal Work Manufacturing.
- Constructing buildings, bridges, and other heavy construction projects on site are classified in Sector 23, Construction.
- Manufacturing concrete reinforcing bar by rolling and drawing steel from purchased steel are classified in U.S. Industry 331221, Rolled Steel Shape Manufacturing.
- Building ships, boats, and barges are classified in Industry 33661, Ship and Boat Building.
- Prefabricating metal buildings, panels, and sections are classified in U.S. Industry 332311, Prefabricated Metal Building and Component Manufacturing.
Activities listed under 332312
The Census index assigns these 23 activities to this code. If your business matches one, this is your code.
- Barge sections, prefabricated metal, manufacturing
- Bars, concrete reinforcing, manufacturing
- Boat sections, prefabricated metal, manufacturing
- Bridge sections, prefabricated metal, manufacturing
- Concrete reinforcing bar (rebar) assemblies, fabrication
- Dam gates, metal plate, manufacturing
- Expansion joints, metal, manufacturing
- Fabricated bar joists manufacturing
- Fabricated structural metal manufacturing
- Flood gates, metal plate, manufacturing
- Floor jacks, metal, manufacturing
- Floor posts, adjustable metal, manufacturing
- Highway bridge sections, prefabricated metal, manufacturing
- Joists, fabricated bar, manufacturing
- Landing mats, aircraft, metal, manufacturing
- Radio and television tower sections, fabricated structural metal, manufacturing
- Railway bridge sections, prefabricated metal, manufacturing
- Ship sections, prefabricated metal, manufacturing
- Steel joists manufacturing
- Steel railroad car racks manufacturing
- Structural steel, fabricated, manufacturing
- Television tower sections, fabricated structural metal, manufacturing
- Transmission tower sections, fabricated structural metal, manufacturing
SBA size standard for 332312
To count as a small business for SBA loans and federal contracts under NAICS 332312, your business (including affiliates) must not exceed 500 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: 2511, 3011, 3012), so treat them as a starting point and check the definition.
- 25110Manufacture of metal structures and parts of structuresUK SIC
- 30110Building of ships and floating structuresUK SIC
- 30120Building of pleasure and sporting boatsUK SIC
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.