327310 — Cement Manufacturing
Description
This industry comprises establishments primarily engaged in manufacturing Portland, natural, masonry, pozzolanic, and other hydraulic cements. Cement manufacturing establishments may calcine earths or mine, quarry, manufacture, or purchase lime.
Exclusions & Cross-References
- Mining or quarrying limestone--are classified in U.S. Industry 212312, Crushed and Broken Limestone
- Mining and Quarrying;
- Manufacturing lime--are classified in Industry 327410, Lime Manufacturing;
- Manufacturing ready-mix concrete--are classified in Industry 327320, Ready-Mix Concrete Manufacturing;
- and
- Manufacturing dry mix concrete--are classified in U.S. Industry 327999, All Other Miscellaneous
- Nonmetallic Mineral Product Manufacturing.
Overview Facts
| NAICS Code | 327310 |
|---|---|
| Industry Title | Cement Manufacturing |
| SBA Size Standard | 1,000 employees |
| IRS PBA Code | 327300 (rolled-up match) |
| Sectors Hierarchy | Sector 31-33 → 327 → 3273 |
| Source / Verified | US Census 2022 NAICS Manual / 2026-06-28 |
Legacy SIC Concordance
Trace the historical mapping chain from the 1987 Standard Industrial Classification (SIC) to the modern 2022 NAICS code format.
- SIC 3241 - Cement, Hydraulic (via SIC1987:3241→NAICS1997:32731→2002:327310→2007:327310→2012:327310→2017:327310→2022:327310)
Related Resources & Compliance Guides
Further regulatory reference links for NAICS code 327310:
- 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.
- 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.
Related Industries in 3273
Frequently Asked Questions (FAQ)
Is 327310 a valid 2022 NAICS code?
NAICS 327310 is 'Cement Manufacturing', a 2022 U.S. national industry under Sector 31-33 (Manufacturing); the SBA small-business size standard is 1,000 employees.
What is the SBA size standard for NAICS 327310?
The SBA small business size standard for NAICS 327310 is 1,000 employees (based on employees).
What is the legacy SIC code mapping for 327310?
NAICS code 327310 maps to the legacy 1987 SIC codes: 3241 - Cement, Hydraulic.