NAICS 326121

Overview

The North American Industry Classification System (NAICS) is the federal standard for classifying business establishments so agencies can collect, analyze, and publish statistics about the U.S. economy. Developed under the Office of Management and Budget (OMB), NAICS was adopted in 1997 to replace SIC and was created jointly with Statistics Canada and Mexico’s INEGI to ensure comparability across North America. The current revision vintage is 2022. ¹

NAICS 326121 covers establishments primarily engaged in manufacturing unlaminated plastics profile shapes (excluding film, sheet, and bags), such as extruded rod, tube, and sausage casings. Federal statistical programs use this code—within Industry Group 32612—to tabulate production and economic data on profile extrusions distinct from plastics pipe, hose, film/sheet, and laminates. ³

See also on G2X:

• G2X — NAICS 326121 overview: https://app.g2xchange.com/naics/326121
• G2X — NAICS 326122 overview
• G2X — NAICS 326220 overview

What this NAICS covers

• Manufacturing unlaminated plastics profile shapes by extrusion (e.g., rods, bars, channels). ³
• Producing unlaminated plastics tubes and nonrigid profile shapes (excluding film, sheet, and bags). ³
• Making plastics sausage casings and other similar unlaminated tubular profiles. ³
• Converting plastics resins into custom unlaminated profiles for industrial applications. ³
• Extruding plastics tubing classified as profiles (distinct from hose and rigid pipe). ³
• Operations organized around profile-shape production rather than laminating, coating, or bag making. ³

Related NAICS and PSC codes

Frequently asked questions

• How is NAICS 326121 different from NAICS 326122? NAICS 326121 covers unlaminated plastics profile shapes (e.g., rods, tubes, casings). NAICS 326122 covers rigid plastics pipes and pipe fittings. They are separate 6-digit industries within the 32612 industry group. ³

• Are plastics hoses or hose assemblies included in NAICS 326121? No. Plastics hose and belting are classified in NAICS 326220. NAICS 326121 covers profile shapes such as tubing and rods, but not hose products. ³

• Does NAICS 326121 include film, sheet, or bag manufacturing? No. Unsupported plastics film, sheet, and bag manufacturing falls under NAICS 32611. NAICS 326121 excludes these categories to keep profile-shape production analytically distinct. ³

• What about plastic electrical conduit and fittings? Noncurrent-carrying plastic electrical conduit is classified in NAICS 335932 (Noncurrent-Carrying Wiring Device Manufacturing), not in NAICS 326121. ⁵

• How is the 2022 NAICS vintage used in federal data for NAICS 326121? The Census Bureau began disseminating Economic Census results on the 2022 NAICS basis with the 2022 releases and is transitioning remaining programs to 2022 NAICS by the end of 2027, aligning industry statistics like those for 326121 to the latest structure. ²

Useful resources

• G2X — NAICS 326121 overview: https://app.g2xchange.com/naics/326121
• Census NAICS — Introduction and search portal. ¹
• Census — Implementation of the 2022 NAICS (overview and timeline). ²
• Census — Sector 31–33 (Manufacturing) 2022 Economic Census data resources. ⁴

References

1. U.S. Census Bureau — North American Industry Classification System (NAICS) main page: https://www.census.gov/naics/
2. U.S. Census Bureau — The Census Bureau’s Implementation of the 2022 NAICS: https://www.census.gov/library/reference/code-lists/naics/2022/implementation-timeline.html
3. U.S. Census Bureau — NAICS 2022 search results for 326121: https://www.census.gov/naics/?input=326121&year=2022
4. U.S. Census Bureau — 2022 NAICS Sector 31–33 Manufacturing data resources: https://www.census.gov/data/tables/2022/econ/economic-census/naics-sector-31-33.html
5. U.S. Census Bureau — NAICS 2022 search results for 335932: https://www.census.gov/naics/?input=335932&year=2022