327320 Ready-Mix Concrete Manufacturing

Official definition

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.

Source: US Census Bureau, 2022 NAICS descriptions.

When to use a different code

Census classifies these close-sounding activities somewhere else. Businesses mainly engaged in:

• Operating sand or gravel pits are classified in U.S. Industry 212321, Construction Sand and Gravel Mining.
• Manufacturing dry mix concrete are classified in U.S. Industry 327999, All Other Miscellaneous Nonmetallic Mineral Product Manufacturing.

Source: US Census Bureau, 2022 NAICS cross-references.

Activities listed under 327320

The Census index assigns these 5 activities to this code. If your business matches one, this is your code.

• Central-mixed concrete manufacturing
• Concrete batch plants (including temporary)
• Ready-mix concrete manufacturing and distributing
• Transit-mixed concrete manufacturing
• Truck-mixed concrete manufacturing

Source: US Census Bureau, 2022 NAICS index file.

SBA size standard for 327320

To count as a small business for SBA loans and federal contracts under NAICS 327320, your business (including affiliates) must not exceed 500 employees. Check your business.

Source: SBA table of size standards, effective March 17, 2023.

Closest UK SIC 2007 codes

There is no official one-to-one link between NAICS and UK SIC. These codes share the same international class (ISIC Rev. 4: 2395), so treat them as a starting point and check the definition.

• 23910Production of abrasive productsUK SIC
• 23990Manufacture of other non-metallic mineral products n.e.c.UK SIC

Built from Census concordances 2022→2017 NAICS and 2017 NAICS→ISIC Rev. 4.

Similar codes to compare

• 327310Cement Manufacturing
• 327390Other Concrete Product Manufacturing