2022 NAICS national industry in sector 31-33 Manufacturing
326122 Plastics Pipe and Pipe Fitting Manufacturing
NAICS 326122 is the US industry code for plastics pipe and pipe fitting manufacturing. This U.S.
- Code
- 326122 (2022 NAICS)
- Title
- Plastics Pipe and Pipe Fitting Manufacturing
- Part of
- Plastics Pipe, Pipe Fitting, and Unlaminated Profile Shape Manufacturing
- SBA small business limit
- Up to 750 employees
- Closest UK SIC
- 22210, 22220, 22230, 22290 (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 converting plastics resins into plastics pipes and pipe fittings.
When to use a different code
Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:
- Manufacturing plastics hose are classified in Industry 326220, Rubber and Plastics Hoses and Belting Manufacturing.
- Manufacturing noncurrent-carrying plastics conduit are classified in U.S. Industry 335932, Noncurrent-Carrying Wiring Device Manufacturing.
- Manufacturing plastics plumbing fixtures are classified in U.S. Industry 326191, Plastics Plumbing Fixture Manufacturing.
Activities listed under 326122
The Census index assigns these 5 activities to this code. If your business matches one, this is your code.
- Fittings and unions, rigid plastics pipe, manufacturing
- Fittings, rigid plastics pipe, manufacturing
- Pipe fittings, rigid plastics, manufacturing
- Pipe, rigid plastics, manufacturing
- PVC pipe manufacturing
SBA size standard for 326122
To count as a small business for SBA loans and federal contracts under NAICS 326122, your business (including affiliates) must not exceed 750 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: 2220), so treat them as a starting point and check the definition.
- 22210Manufacture of plastic plates, sheets, tubes and profilesUK SIC
- 22220Manufacture of plastic packing goodsUK SIC
- 22230Manufacture of builders ware of plasticUK SIC
- 22290Manufacture of other plastic productsUK 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.