NAICS 333922

Overview

The North American Industry Classification System (NAICS) is the government-wide taxonomy for classifying business establishments to produce consistent statistics on the U.S. economy. Developed under the Office of Management and Budget (OMB) and adopted in 1997 to replace SIC, NAICS was created jointly by the U.S. Economic Classification Policy Committee (ECPC), Statistics Canada, and Mexico’s INEGI; the current published vintage is 2022. ¹

NAICS 333922 defines firms primarily engaged in manufacturing conveyors and conveying equipment, including gravity, trolley, tow, pneumatic tube, carousel, farm, and belt conveyors. Federal statistical programs and acquisition market analyses use this definition to delineate the conveyor manufacturing industry from adjacent material handling categories such as elevators and overhead traveling cranes. ²

See also on G2X:

• G2X — NAICS 333922 overview
• G2X — NAICS 333921
• G2X — NAICS 333923

What this NAICS covers

• Manufacture of gravity conveyors for unit and bulk materials. ²
• Manufacture of powered belt conveyors and associated conveying lines. ²
• Manufacture of trolley and tow conveyor systems. ²
• Manufacture of pneumatic tube conveyor systems. ²
• Manufacture of carousel/loop conveyors for continuous handling. ²
• Manufacture of farm conveyors and agricultural-use conveying equipment. ²
• Manufacture of component conveying equipment integral to material handling systems (excluding cranes and elevators). ²

Related NAICS and PSC codes

Scope notes and cross-references

• Excludes manufacturing of passenger/freight elevators, dumbwaiters, and moving stairways (classified under 333921). ²
• Excludes manufacturing of overhead traveling cranes, hoists, and monorail systems (classified under 333923). ²
• Product coding for conveyor procurements often uses PSC 3910; rate-controlled materials feeders are PSC 3915. ³

Frequently asked questions

• What products are included in NAICS 333922?

  • The industry covers manufacturing of conveyors and conveying equipment such as gravity, trolley, tow, pneumatic tube, carousel, farm, and belt conveyors. It is limited to manufacturing; installation and service activities are outside this industry scope in the NAICS system. ²

• How does NAICS 333922 differ from 333921 and 333923?

  • 333922 captures conveyor manufacturing; 333921 covers elevators, escalators, and moving walkways; 333923 covers overhead traveling cranes, hoists, and monorail systems. These boundaries are established by the 2022 NAICS manual cross-references. ²

• Are farm conveyors within NAICS 333922?

  • Yes. Farm conveyors are explicitly listed among illustrative examples for this industry, along with belt, pneumatic tube, trolley, tow, gravity, and carousel conveyors. This inclusion helps distinguish agricultural-use conveyors from crane or elevator equipment categories. ²

• Which PSC codes commonly align with conveyor equipment buys?

  • PSC 3910 covers conveyors (including pneumatic tube systems and powered/nonpowered conveyors). PSC 3915 covers materials feeders used as conveying devices with controlled delivery rates. Agencies may pair these PSCs with 333922 in product-oriented buys. ³

Useful resources

• G2X — NAICS 333922 overview: https://app.g2xchange.com/naics/333922
• U.S. Census Bureau — NAICS main page and 2022 NAICS search. ¹
• U.S. Census Bureau — 2022 NAICS Manual (official industry definitions). ²
• GSA/Acquisition.gov — Product and Service Codes Manual (current edition). ³

References

1. U.S. Census Bureau. North American Industry Classification System (NAICS) — Introduction and 2022 NAICS Search. https://www.census.gov/naics
2. U.S. Census Bureau. 2022 NAICS Manual (official industry titles, definitions, and cross-references), p. 258 (333922) and surrounding. https://www.census.gov/naics/reference_files_tools/2022_NAICS_Manual.pdf
3. Acquisition.gov (GSA). Product and Service Codes (PSC) Manual, Fiscal Year 2025 Edition — Group 39 Materials Handling Equipment (PSC 3910, 3915). https://www.acquisition.gov/sites/default/files/manual/PSC%20Manual%20April%202025.pdf