This industry comprises establishments primarily engaged in refining crude petroleum into refined petroleum. Petroleum refining involves one or more of the following activities: (1) fractionation; (2) straight distillation of crude oil; and (3) cracking.
✓ Small Business Eligibility at a Glance
Based on SBA Table of Small Business Size Standards (2024)
Size Standard
1,500 employees
Measurement Period
Current count
Standard Type
Employee-Based
Applies To
All contracts under NAICS 324110
Set-Aside Programs
8(a), WOSB, HUBZone, SDVOSB
Certification Required
No (self-certify in SAM.gov)
Size standards are set by the SBA and reviewed periodically. Always verify at SBA.gov before bidding.
Cross-References
The following activities are classified elsewhere in the NAICS system:
→Manufacturing asphalt paving, roofing, and saturated materials from refined petroleum--are classified in Industry 32412, Asphalt Paving, Roofing, and Saturated Materials Manufacturing;
→Manufacturing paper mats and felts and saturating them with asphalt or tar into rolls and sheets--are classified in Industry 322120, Paper Mills;
→Blending or compounding refined petroleum to make lubricating oils and greases and/or re-refining used petroleum lubricating oils--are classified in U.S. Industry 324191, Petroleum Lubricating Oil and Grease Manufacturing;
→Manufacturing biofuels blended with purchased refined petroleum--are classified in U.S. Industry 324199, All Other Petroleum and Coal Products Manufacturing;
→Manufacturing biofuels not blended with refined petroleum--are classified in U.S. Industry 325199, All Other Basic Organic Chemical Manufacturing;
→Manufacturing synthetic lubricating oils and greases--are classified in U.S. Industry 325998, All Other Miscellaneous Chemical Product and Preparation Manufacturing;
→Recovering natural gasoline and/or liquid hydrocarbons from oil and gas field gases--are classified in Industry 211130, Natural Gas Extraction;
→Manufacturing acyclic and cyclic aromatic hydrocarbons (i.e., petrochemicals) from refined petroleum or liquid hydrocarbons--are classified in Industry 325110, Petrochemical Manufacturing;
→Manufacturing cyclic and acyclic chemicals (except petrochemicals)--are classified in Industry 32519, Other Basic Organic Chemical Manufacturing;
→Manufacturing coke oven products in steel mills--are classified in Industry 331110, Iron and Steel Mills and Ferroalloy Manufacturing; and
→Manufacturing coke oven products in coke oven establishments--are classified in U.S. Industry 324199, All Other Petroleum and Coal Products Manufacturing.
How to Use NAICS 324110 in SAM.gov
NAICS code 324110 — Petroleum Refineries — is used in SAM.gov to identify businesses whose primary activity falls within this classification. When you add this code to your SAM.gov entity registration, contracting officers searching for vendors in the Petroleum and Coal Products Manufacturing space will be able to find your business.
If this code represents your primary business activity, designate it as your primary NAICS code. Your primary NAICS code determines your size standard for any contract solicited under this code. With a size standard of 1,500 employees, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 324110.
NAICS code 324110 is 'Petroleum Refineries', classified under the Manufacturing sector (NAICS 32). This industry comprises establishments primarily engaged in refining crude petroleum into refined petroleum. Petroleum refining involves one or more of the following activities: (1) fractionation; (2
What is the SBA small business size standard for NAICS code 324110?
The SBA defines a small business under NAICS code 324110 (Petroleum Refineries) as one with 1,500 employees. This size standard determines eligibility for small business set-aside contracts, 8(a), HUBZone, WOSB, and SDVOSB programs in SAM.gov.
How do I register NAICS code 324110 in SAM.gov?
To register NAICS code 324110 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 324110 (Petroleum Refineries) to your NAICS code list. You may designate one code as your Primary NAICS code.