324110

Petroleum Refineries

Manufacturing › Petroleum and Coal Products Manufacturing › Petroleum and Coal Products Manufacturing

SBA Size Standard

1,500 employees

Employee-Based Verify at SBA.gov →

NAICS Code Hierarchy

32

Sector

Manufacturing

324

Subsector

Petroleum and Coal Products Manufacturing

3241

Industry Group

Petroleum and Coal Products Manufacturing

324110

National Industry (This Code)

Petroleum Refineries

Official NAICS Description

Source: U.S. Census Bureau 2022 NAICS

📘 Source: U.S. Census Bureau — 2022 NAICS Manual
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 324110Petroleum 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.

Log in Entity Registration Goods & Services Add NAICS Code Enter 324110 Save

Frequently Asked Questions

What is NAICS code 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.

Quick Actions

Related NAICS Codes

Other codes in Petroleum and Coal Products Manufacturing

Related PSC Codes

PSC codes commonly used with this NAICS sector

Source: GSA PSC Manual April 2025

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