327320 — Ready-Mix Concrete Manufacturing
Description
This industry comprises establishments, such as batch plants or mix plants, primarily engaged in manufacturing concrete delivered to a purchaser in a plastic and unhardened state. Ready-mix concrete manufacturing establishments may mine, quarry, or purchase sand and gravel (as defined in the official U.S. Census Bureau 2022 NAICS Manual).
Exclusions & Cross-References
- Operating sand or gravel pits--are classified in U.S. Industry 212321, Construction Sand and Gravel
- Mining; and
- Manufacturing dry mix concrete--are classified in U.S. Industry 327999, All Other Miscellaneous
- Nonmetallic Mineral Product 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 3273 - Ready-Mixed Concrete (via SIC1987:3273→NAICS1997:32732→2002:327320→2007:327320→2012:327320→2017:327320→2022:327320)
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 3630 — Clay and Concrete Products Industries Machinery
Source: DoD DPCAP PSC Selection Tool (Ingested: 2026-06-29)
Frequently Asked Questions (FAQ)
Is NAICS code 327320 valid in 2022? ▾
Yes, 327320 is a valid 6-digit 2022 NAICS national industry code representing 'Ready-Mix Concrete Manufacturing' under Sector 31-33 in the official classification index.
What is the SBA size standard for NAICS code 327320? ▾
The Small Business Administration (SBA) has established a small business size standard of 500 employees for NAICS code 327320 (Ready-Mix Concrete Manufacturing), calculated based on employees.
What is the legacy SIC equivalent for NAICS 327320? ▾
According to official Census Bureau concordance tables, NAICS code 327320 (Ready-Mix Concrete Manufacturing) maps to legacy 1987 Standard Industrial Classification (SIC) codes: 3273 - Ready-Mixed Concrete.
Related Pages & Tools
Further regulatory reference links for NAICS code 327320:
- 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 327320 to SIC Crosswalk — Bidirectional mapping to legacy SIC codes (Ready-Mix Concrete 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.