2022 NAICS industry in sector 31-33 Manufacturing
33231 Plate Work and Fabricated Structural Product Manufacturing
NAICS 33231 is the US industry code for plate work and fabricated structural product manufacturing. It covers establishments primarily engaged in manufacturing one or more of the following: (1) prefabricated metal buildings, panels, and sections; (2) structural metal products; and (3) metal plate work products.
Official definition
This industry comprises establishments primarily engaged in manufacturing one or more of the following: (1) prefabricated metal buildings, panels, and sections; (2) structural metal products; and (3) metal plate work products.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Making manufactured homes (i.e., mobile homes) and prefabricated wood buildings are classified in Industry 32199, All Other Wood Product Manufacturing.
- Constructing buildings, bridges, and other heavy construction projects on site are classified in Sector 23, Construction.
- Building ships, boats, and barges are classified in Industry 33661, Ship and Boat Building.
- Manufacturing power boilers and heat exchangers are classified in Industry 33241, Power Boiler and Heat Exchanger Manufacturing.
- Manufacturing heavy gauge tanks are classified in Industry 33242, Metal Tank (Heavy Gauge) Manufacturing.
- Manufacturing metal plate cooling towers are classified in Industry 33341, Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing.
- Manufacturing metal windows, doors, and studs are classified in Industry 33232, Ornamental and Architectural Metal Products Manufacturing.
Codes in 33231
Data last changed November 14, 2026. How this page is built.