237120

Oil and Gas Pipeline and Related Structures Construction

Construction › Heavy and Civil Engineering Construction › Utility System Construction

SBA Size Standard

$45M average annual receipts

Revenue-Based Verify at SBA.gov →

NAICS Code Hierarchy

23

Sector

Construction

237

Subsector

Heavy and Civil Engineering Construction

2371

Industry Group

Utility System Construction

237120

National Industry (This Code)

Oil and Gas Pipeline and Related Structures Construction

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 the construction of oil and gas lines, mains, refineries, and storage tanks. The work performed may include new work, reconstruction, rehabilitation, and repairs. Specialty trade contractors are included in this industry if they are engaged in activities primarily related to oil and gas pipeline and related structures construction. All structures (including buildings) that are integral parts of oil and gas networks (e.g., storage tanks, pumping stations, and refineries) are included in this industry. Illustrative Examples: Distribution line, gas and oil, construction Oil refinery construction Gas main construction Petrochemical plant construction Gathering line, gas and oil field, construction Natural gas pipeline construction Pumping station, gas and oil transmission, construction Storage tank, natural gas or oil, tank farm or field, construction Natural gas processing plant construction

✓ Small Business Eligibility at a Glance

Based on SBA Table of Small Business Size Standards (2024)

Size Standard

$45M average annual receipts

Measurement Period

3-year average

Standard Type

Revenue-Based

Applies To

All contracts under NAICS 237120

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:

Building chemical plants (except petrochemical) and similar process or batch facilities--are classified in Industry 236210, Industrial Building Construction;
Oil well rig building, repairing, and dismantling, on a contract basis--are classified in U.S. Industry 213112, Support Activities for Oil and Gas Operations;
Inspecting pipelines (i.e., visual)--are classified in Industry 541990, All Other Professional, Scientific, and Technical Services;
Installing and maintaining natural gas distribution lines performed by natural gas utility companies--are classified in Subsector 221, Utilities;
Mining machinery and equipment repair and maintenance--are classified in Industry 811310, Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance; and
Manufacturing floating oil and gas drilling and production platforms--are classified in U.S. Industry 336611, Ship Building and Repairing.

How to Use NAICS 237120 in SAM.gov

NAICS code 237120Oil and Gas Pipeline and Related Structures Construction — 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 Utility System Construction 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 $45M average annual receipts, your business must be at or below this threshold to qualify as a small business for set-aside contracts under NAICS 237120.

Log in Entity Registration Goods & Services Add NAICS Code Enter 237120 Save

Frequently Asked Questions

What is NAICS code 237120?

NAICS code 237120 is 'Oil and Gas Pipeline and Related Structures Construction', classified under the Construction sector (NAICS 23). This industry comprises establishments primarily engaged in the construction of oil and gas lines, mains, refineries, and storage tanks. The work performed may include new work, reconstruction, rehab

What is the SBA small business size standard for NAICS code 237120?

The SBA defines a small business under NAICS code 237120 (Oil and Gas Pipeline and Related Structures Construction) as one with $45M average annual receipts. 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 237120 in SAM.gov?

To register NAICS code 237120 in SAM.gov: (1) Log in at sam.gov, (2) Navigate to your Entity Registration, (3) Go to the Assertions section, (4) Add 237120 (Oil and Gas Pipeline and Related Structures Construction) to your NAICS code list. You may designate one code as your Primary NAICS code.

Quick Actions

Related NAICS Codes

Other codes in Utility System Construction

Related PSC Codes

PSC codes commonly used with this NAICS sector

Source: GSA PSC Manual April 2025

GovBidLab Pro

Not sure which NAICS codes fit your business?

GovBidLab's Federal Sales Roadmap includes a complete NAICS and PSC code strategy tailored to your business.

Get Your Free Consultation

No commitment required • Response within 24 hours

Find Another NAICS Code

Search all 1,012 NAICS codes with SBA size standards and descriptions

Browse by sector:

Agriculture Construction Manufacturing Information/IT Health Care