NAICS Code 331210 — Iron and Steel Pipe and Tube Manufacturing from Purchased Steel

National Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It is the only national industry under 33121 (Iron and Steel Pipe and Tube Manufacturing from Purchased Steel).

Code	331210
Title	Iron and Steel Pipe and Tube Manufacturing from Purchased Steel
Level	National Industry (6-digit)
Edition	NAICS 2022 edition
SBA size standard	1,000 employees

Official definition (2022 NAICS)

This industry comprises establishments primarily engaged in manufacturing welded, riveted, or seamless pipe and tube from purchased iron or steel.

Cross-References.

Is a business under 331210 "small"?

Under the SBA size standards (13 CFR 121.201, effective March 17, 2023), a business classified in NAICS 331210 qualifies as a small business if it does not exceed 1,000 employees. Small-business status determines eligibility for federal set-aside contracts, SAM.gov certifications and SBA loan programs — employee count is averaged over the latest 24 months.

Where 331210 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	331	Primary Metal Manufacturing
Industry Group	3312	Steel Product Manufacturing from Purchased Steel
NAICS Industry	33121	Iron and Steel Pipe and Tube Manufacturing from Purchased Steel
National Industry	331210	Iron and Steel Pipe and Tube Manufacturing from Purchased Steel

No direct SIC mapping is shown for this code: it was introduced or redefined after the official 1987 SIC ↔ 2002 NAICS concordance. Use the crosswalk tool to explore related legacy codes.

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.