326122 — Plastics Pipe and Pipe Fitting Manufacturing
Description
This U.S. industry comprises establishments primarily engaged in converting plastics resins into plastics pipes and pipe fittings (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- 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; and
- Manufacturing plastics plumbing fixtures--are classified in U.S. Industry 326191, Plastics Plumbing
- Fixture Manufacturing.
Overview Facts
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3084 - Plastics Pipe (via SIC1987:3084→NAICS1997:326122→2002:326122→2007:326122→2012:326122→2017:326122→2022:326122)
- SIC 3089 - Plastics Products, NEC (via SIC1987:3089→NAICS1997:326122→2002:326122→2007:326122→2012:326122→2017:326122→2022:326122)
Suggested Product Service Codes (Advisory)
The following Product Service Codes (PSCs) are advisory suggestions aligned with this NAICS code. Note: NAICS and PSC codes map to different dimensions of procurement (industry vs. product/service). There is no official binding 1:1 crosswalk.
- PSC 3620 — Rubber and Plastics Working Machinery
- PSC 4710 — Pipe, Tube and Rigid Tubing
- PSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 326122 valid in 2022? ▾
Yes, 326122 is a valid 6-digit 2022 NAICS national industry code representing 'Plastics Pipe and Pipe Fitting Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 326122? ▾
The Small Business Administration (SBA) has established a small business size standard of 750 employees for NAICS code 326122 (Plastics Pipe and Pipe Fitting Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 326122? ▾
According to official Census Bureau concordance tables, NAICS code 326122 (Plastics Pipe and Pipe Fitting Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3084 - Plastics Pipe, 3089 - Plastics Products, NEC.
Related Pages & Tools
Further regulatory reference links for NAICS code 326122:
- Sector 31-33 Directory Hub — List of related industries in the Manufacturing sector.
- SIC ↔ NAICS Crosswalk Tool — Look up mappings between legacy SIC codes and modern classifications.
- NAICS 326122 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Plastics Pipe and Pipe Fitting Manufacturing).
- SBA Size Standards Guide — Complete rules and averaging periods for small business classifications.
- Calculating Annual Receipts Guide — Detailed worked example of revenue calculation rules.
- IRS Principal Business Activity Guide — How NAICS codes map to corporate and entity tax filings.