NAICS 237120: Oil and Gas Pipeline and Related Structures Construction
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.
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.
Examples of work in this code:
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
Not in this code
Establishments primarily engaged in building chemical plants (except petrochemical) and similar process or batch facilities are classified in Industry 236210, Industrial Building Construction.
Establishments primarily engaged in 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.
Establishments primarily engaged in inspecting pipelines (i.e., visual) are classified in Industry 541990, All Other Professional, Scientific, and Technical Services.
Establishments primarily engaged in installing and maintaining natural gas distribution lines performed by natural gas utility companies are classified in Subsector 221, Utilities.
Establishments primarily engaged in 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.
Establishments primarily engaged in manufacturing floating oil and gas drilling and production platforms are classified in U.S. Industry 336611, Ship Building and Repairing.
SBA size standard
A business is small under NAICS 237120 if it has no more than $45 million in average annual receipts (averaged over the last five completed fiscal years, including affiliates).
Source: SBA Table of Size Standards, effective 2023-03-17. Always check the size standard printed in the solicitation itself.
Who buys it
Departments that posted the most NAICS 237120 solicitations in the last two years:
117 Fuel Tank Removal · Department of Defense · Alabama · posted September 16, 2026
Containment Sump Replacement - McConnell AFB · Department of Defense · Kansas · posted September 8, 2026
NITROGEN-ARGON PIPING INSTALLATION at the Watervliet Arsenal (WVA) · Department of Defense · New York · posted September 4, 2026
FY 26 Roush Lake Diesel Fill Tube Replacement · Department of Defense · posted August 28, 2026
Underground Storage Tank Repair/Replace · Veterans Affairs · Washington · posted August 28, 2026
FPC Yankton - Above Ground Storage Tanks Project 26Z4AH3 · Justice · South Dakota · posted August 26, 2026
Do this kind of work?
Send XL Eagle your price on an open oil and gas pipeline and related structures construction job. We write and submit the bid under our registrations. If we win, you do the work at your price. No fees.
NAICS 237120 is Oil and Gas Pipeline and Related Structures Construction. 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.
What is the SBA size standard for NAICS 237120?
The size standard for NAICS 237120 is $45 million in average annual receipts. Firms at or under it count as small businesses for contracts assigned this code.
Are there government contracts for oil and gas pipeline and related structures construction?
Yes. 2 government contracts are open under NAICS 237120 right now, and 21 were posted in the last 12 months.
Can I bid on NAICS 237120 contracts without registering in SAM.gov?
You need an active SAM.gov registration to win a federal contract in your own name. If you would rather skip that, XL Eagle can bid as the prime contractor using your price, and you do the work as our subcontractor.
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