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NAICS Code· 237120

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. 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 Cross-References. Establishments primarily engaged in--Show more

NAICS 237120 – Oil and Gas Pipeline and Related Structures Construction covers the design, construction, installation, and maintenance of pipelines, pump stations, compressor stations, storage facilities, and associated infrastructure for the transport of oil, natural gas, and refined products. This sector includes both onshore and offshore pipeline systems, right-of-way clearing, trenching, welding, cathodic protection systems, and pipeline integrity monitoring.

92
Active Contracts
$469.5M
Total Obligations (12mo)
188
Awarded Contracts (12mo)
113
Contractors Awarded (12mo)
2
Median Bidders per Award
-18.2%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 237120.

AI Industry Description

NAICS 237120 – Oil and Gas Pipeline and Related Structures Construction covers the design, construction, installation, and maintenance of pipelines, pump stations, compressor stations, storage facilities, and associated infrastructure for the transport of oil, natural gas, and refined products. This...

NAICS 237120 – Oil and Gas Pipeline and Related Structures Construction covers the design, construction, installation, and maintenance of pipelines, pump stations, compressor stations, storage facilities, and associated infrastructure for the transport of oil, natural gas, and refined products. This sector includes both onshore and offshore pipeline systems, right-of-way clearing, trenching, welding, cathodic protection systems, and pipeline integrity monitoring. In the federal contracting landscape, this NAICS code supports critical energy infrastructure projects for military installations, remote defense bases, and federal facilities requiring reliable fuel supply chains. Projects often involve compliance with environmental regulations, hazardous material handling protocols, and stringent safety standards under OSHA and PHMSA guidelines. Top contractors in this sector include AAECON GENERAL CONTRACTING LLC and ENFIELD ENTERPRISES LLC, both of which are small businesses specializing in pipeline construction, civil earthwork, and utility integration services. These firms typically compete for task orders under indefinite-delivery/indefinite-quantity (IDIQ) contracts and are known for their expertise in mobilizing rapidly to remote or constrained sites. The competitive landscape is dominated by niche contractors with proven experience in federal environmental permitting and pipeline routing through sensitive or federally managed lands. Primary buyers include the Department of Defense, Department of Veterans Affairs, Department of Homeland Security, and Department of Justice, which procure these services to sustain energy resilience at military bases, correctional facilities, and emergency response hubs. Demand is driven by mission-critical fuel logistics, infrastructure modernization, and compliance with federal energy security mandates. The market offers consistent opportunity density for contractors with specialized capabilities in pipeline welding, directional drilling, and federal environmental compliance. Trends indicate growing demand for pipeline rehabilitation, leak detection systems, and integration with renewable energy transition initiatives, creating openings for firms with hybrid infrastructure expertise.

Top Contractors

Companies with the highest total award value under NAICS 237120, ranked by dollars won.

Ranked by total awards
CompanyTotal AwardsContracts
WESTON SOLUTIONS INC$87.9M1
NOVA GROUP, INC.$58.0M1
ABSHER CONSTRUCTION CO$47.3M1
WSP USA ENVIRONMENT & INFRASTRUCTURE INC.$39.7M2
DAWSON ENTERPRISES, INC.$35.5M4
UTE COBRA CASTELLANO COMBUSTIBLES$28.5M2
RELIABLE CONTRACTING GROUP, LLC$17.2M3
CMS CORPORATION$13.5M1
S & B INFRASTRUCTURE LTD$12.9M1
GOSHAWK, LLC$12.0M4

Top Agencies

Federal agencies directing the most contract spending toward NAICS 237120.

Department Of Defense73 awards$386.1M
Department Of Defense (dod)84 awards$65.8M
Department Of Justice1 award$3.3M
FA5270 18 Cons Pk1 award$3.3M
Department Of Agriculture4 awards$3.1M
Department Of The Interior6 awards$2.7M
0906 Aq Co Contracting Bat1 award$2.3M
Department Of Homeland Security5 awards$1.4M
Department Of Veterans Affairs3 awards$628K
Department Of Health And Human Services1 award$466K

Competition

How many companies historically bid on federal awards in NAICS 237120, from bidder counts reported on USAspending.

Fewer Bidders

Median under 3 bidders per reported award. · 4,081 reported awards

Median Bidders

2

Per reported award, all-time

Single-Bid Awards

44%

Share of reported awards with one bidder

10+ Bidder Awards

5%

Share of reported awards with 10+ bidders

Reported Awards

0

91% of 4,476 total awards

How this code compares up the NAICS hierarchy. Parent cohorts pool every code under their prefix, so they are the steadier baseline when a 6-digit sample is thin.

Industry FamilyCompetitionMedian BiddersSingle-BidBidder MixReported Awards
237120This Code
Oil and Gas Pipeline and Related Structures Construction
Fewer Bidders244%
4,08191% of 4,476
23712NAICS Industry
Fewer Bidders244%
4,08191% of 4,476
2371Industry Group
Utility System Construction
Fewer Bidders245%
44,11889% of 49,673
237Subsector
Fewer Bidders235%
162,19989% of 181,512
23Sector
Construction
Fewer Bidders240%
1,131,28289% of 1,273,592

Bidder counts reported on past federal awards in this NAICS (USAspending). An open opportunity has no bidders yet, so this is the historical norm for similar work, not a fact about this solicitation. Not all awards report bidder counts, and fewer bidders often means incumbent-held work rather than an easier win. Federal reporting of bidder counts fell from ~96% of awards (FY2016) to ~30% (FY2018 onward); the chart shows shares of reported awards, and washed-out stretches mark years with fewer than 30 of them.

Related NAICS Codes

Industries similar to Oil and Gas Pipeline and Related Structures Construction, by shared sector, subsector, and industry group.

Water and Sewer Line and Related Structures Construction

This industry comprises establishments primarily engaged in the construction of water and sewer line...
237110Same Industry GroupHigh Similarity

Power and Communication Line and Related Structures Construction

This industry comprises establishments primarily engaged in the construction of power lines and towe...
237130Same Industry GroupHigh Similarity

Land Subdivision

This industry comprises establishments primarily engaged in servicing land and subdividing real prop...
237210Same SubsectorMedium Similarity

Highway, Street, and Bridge Construction

This industry comprises establishments primarily engaged in the construction of highways (including ...
237310Same SubsectorMedium Similarity

Other Heavy and Civil Engineering Construction

This industry comprises establishments primarily engaged in heavy and civil engineering construction...
237990Same SubsectorMedium Similarity

New Single-Family Housing Construction (except For-Sale Builders)

This U.S. industry comprises general contractor establishments primarily responsible for the entire ...
236115Same SectorMedium Similarity

New Multifamily Housing Construction (except For-Sale Builders)

This U.S. industry comprises general contractor establishments primarily responsible for the constru...
236116Same SectorMedium Similarity

New Housing For-Sale Builders

This U.S. industry comprises establishments primarily engaged in building new homes on land that is ...
236117Same SectorMedium Similarity

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NAICS 237120 FAQ

Frequently Asked Questions

NAICS code 237120 covers 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. 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 Cross-References. Establishments primarily engaged in--

Recently Posted in Oil and Gas Pipeline and Related Structures Construction

NAICS: 237120
New
SLED
Rock Slope Protection InstallationThe contract involves the installation of Class I, 20 lb rock slope protection using Method B to control erosion on highway slopes, covering a volume of 21 cubic yards. This work is part of a subcontract under the California Department of Transportation and is intended to stabilize slopes along a designated highway segment in Alameda. The material specification requires rock weighing 20 pounds per piece, meeting Class I standards for durability and sizing, and the application must follow Method B, which dictates specific placement techniques to ensure long-term erosion resistance and structural integrity. The solicitation was posted on September 17, 2026, with the same date set as the response deadline, indicating a rapid procurement timeline. The project falls under NAICS code 237120, classifying it as highway and street construction, and is being executed within California’s transportation infrastructure framework, with performance located specifically in the city of Alameda.
California Department of Transportation

POSTED

in 20 days

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in 20 days
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NAICS: 237120
New
SLED
Trenchless Installation of Reinforced Concrete Pipe (18", 24", 30")The contract calls for the trenchless installation of reinforced concrete pipes in diameters of 18 inches, 24 inches, and 30 inches using microtunneling or pipe jacking techniques, with full responsibility for shaft construction, alignment, and associated geotechnical coordination. Work is to be performed in Calhoun, Orangeburg, under the oversight of the South Carolina Department of Transportation, following industry-standard practices for minimal surface disruption and precision underground placement. The project is classified under NAICS code 237120 for sewer and wastewater construction and is structured as a subcontract opportunity with no set-aside provisions specified. The solicitation was posted and the response deadline are both set for September 9, 2026, indicating a planned competitive bidding process with no immediate urgency, allowing proposers time to prepare detailed technical and cost proposals. All performance and compliance obligations are tied to the location in Calhoun, Orangeburg, and bidders must ensure alignment with state transportation and civil engineering requirements.
South Carolina Department of Transportation

POSTED

in 12 days

DEADLINE

in 12 days
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NAICS: 237120
Closed
SLED
Gas Main Installation
New Jersey Department of Transportation

POSTED

1 day ago

CLOSED

1 day ago
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NAICS: 237120
New
SLED
RFP Springfield Gas Main Extension
Solicitation # 100052002174 GP3028
The Metropolitan Utilities District is soliciting proposals from Nebraska-licensed engineering firms for the Springfield Gas Main Extension project. The selected consultant will provide preliminary engineering, final design, bidding services, and construction-phase support for approximately five miles of 16-inch coated steel high-pressure natural gas distribution main. The project is located along Platteview Road from South 72nd Street to South 132nd Street in Sarpy County, Nebraska, with an established MAOP of 275 psig and an initial operating pressure of 125 psig. Interested bidders must submit one electronic PDF copy of the technical proposal via email and five hard copies to the M.U.D. Headquarters in Omaha by October 30, 2026, at 3:00 PM. The submission process requires a strict separation of the technical and cost proposals, as cost information must be submitted in a separate sealed envelope and cannot be sent electronically. Technical proposals will be evaluated prior to the opening of the cost proposals. All inquiries should be directed to the Project Engineer, Tim Owens.
Metropolitan Utilities District

POSTED

2 days ago

DEADLINE

in 2 months
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NAICS: 237120
New
Federal
FPC Yankton - Above Ground Storage Tanks Project 26Z4AH3
Solicitation # 15B41626Q00000010
The Federal Bureau of Prisons at FPC Yankton is seeking a contractor to replace an underground fuel storage tank and associated fuel dispensing system with a new above-ground system, including a 3,000-gallon split-compartment double-wall tank compliant with UL 142, supported by a reinforced concrete pad and fully integrated fuel delivery infrastructure. The project requires the safe removal, decommissioning, and environmental remediation of the existing underground tank and piping, including fuel pumpout, vapor removal, soil sampling, site assessment, and submission of documentation to the Department of Agriculture and Natural Resources for certification of closure. The new system includes two Gasboy 9823K-F Astra dispensers with pulse output, UL-listed hoses and breakaways, spill containment, continuous leak detection, overfill prevention, electronic gauging with alarms, and a key fob-based automated fuel tracking system linked to a controller in the Garage Office and backed by the facility’s generator. The contractor must supply 30 vehicle-specific and two general key fobs and install protective steel bollards around the tank and dispensing area. All work must comply with NFPA 70, API RP 1604, and other applicable standards, with final testing and certification required for the dispensers by Weights & Measures authorities. The procurement is issued as a Request for Quotation under FAR Part 12 and 36, with a 161-calendar-day performance period beginning upon notice to proceed. Bidders must be registered in SAM.gov and possess a valid Marketing Partner Identification Number to access the solicitation materials, which are exclusively available through the Contract Opportunity website. Submissions must include product specification sheets and cannot be submitted via fax or hand delivery. A mandatory site visit is scheduled for August 20, 2026, with all attendees required to submit approved NCIC criminal history forms by August 12, 2026. Questions must be submitted in writing by August 24, 2026, and all quotations are due by August 31, 2026, at 8:00 AM CDT. Payment will be processed via Electronic Funds Transfer under federal guidelines. The NAICS code is 237120 with a $45 million small business size standard, and no set-aside applies. Failure to maintain current SAM.gov registration or to follow submission protocols will disqualify responses.
Fpc Yankton

POSTED

2 days ago

DEADLINE

in 3 days
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NAICS: 237120
New
Federal
Z2GC--Repair Above Ground Storage Tanks, USCG Base Elizabeth City
Solicitation # 70Z08126QELIZ0021
The contract requires a small business to provide all supervision, labor, equipment, parts, and tools necessary to repair deficiencies in above-ground storage tanks at USCG Base Elizabeth City, North Carolina, under a Firm-Fixed Price arrangement. The work involves seven line items: one base item for repairing three 80,000-gallon JP-5 fuel tanks at the Fuel Farm, and six optional line items covering ventilation upgrades, grounding wire installation, alarm and leak detection system compliance, paint and preservation, miscellaneous tasks, and double-walled piping installation. All work must adhere to strict standards including SSPC SP-1 and SP-3 for surface prep, NFPA 30 and API 2000 for vent sizing, UFC and NFPA codes for grounding and piping, and require three coats of epoxy-based paint matching existing tank color. Contractors must replace all tank signage to reflect "Off-Spec JP-5" instead of "Used JP-5," install confined space warning signs at shell manways, and meet detailed labeling requirements for contents, capacity, and no-smoking zones. Submission of initial product data for coatings, vents, alarms, and piping, along with project schedules, operation manuals, safety data sheets, and past performance documentation, is mandatory with the quote. Offers must be submitted via email by noon Eastern Time on September 1, 2026, to Frank M. Powers, and must include a completed SF-1442 with UEI and pricing in blocks 14 through 20c. A site visit on August 20 is strongly encouraged, requiring advance coordination with Josh Carr and compliance with base security protocols including presentation of a Real ID or passport and submission of full name, date of birth, and last four digits of SSN. The procurement is a 100% set-aside for small businesses using NAICS code 237120 with a size standard of $45 million, and evaluation follows a Lowest Price Technically Acceptable (LPTA) method, where technical acceptability is a pass/fail threshold before price is considered. Successful bidders must furnish performance and payment bonds at 100% of the contract value unless exempt under FAR thresholds, comply with Davis-Bacon wage rates for Pasquotank County, use only domestic construction materials as required by the Buy American clause, and adhere to local hiring mandates. Labor clauses enforce construction wage requirements, apprenticeship rules, payroll recordkeeping, and prohibitions on convict labor,
Base Elizabeth CITY(00081)

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3 days ago

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in 4 days
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NAICS: 237120
New
SLED
Water Storage and Irrigation Infrastructure SupportThe California Cannabis Control Department is seeking a subcontractor for the Water Storage and Irrigation Infrastructure Support project. This contract involves the maintenance of a 38,000 gallon irrigation water storage system and the associated distribution network serving a 10,000 square foot cultivation area. The project is categorized under NAICS code 237120 and is located in the 95552 zip code area. The solicitation was posted on August 25, 2026, and is managed through the California state agency system.
California Cannabis Control, Department of

POSTED

3 days ago

DEADLINE

N/A
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NAICS: 237120
New
DIBBS
Earthwork and Site GradingThis subcontract for Earthwork and Site Grading involves clearing, excavation, grading, and erosion control for site development. The project is being managed by the Department of Defense in San Diego, with the place of performance located in zip code 92136-3581. The opportunity is designated as a Total Small Business Set-Aside under FAR 19.5 and falls under NAICS code 237120. The solicitation was posted on August 24, 2026, and the deadline for responses is September 4, 2026.
SAN DIEGO

POSTED

4 days ago

DEADLINE

in 7 days
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NAICS: 237120
Awarded
Federal
Coos Bay Fuel Upgrades
Solicitation # W9127N26PA093
The Coos Bay Fuel Upgrades project, identified by solicitation number W9127N26PA093, is an award notice issued by the Department of Defense through the W071 Endist Portland office. This contract falls under NAICS code 237120 and is designated as a total Small Business Set Aside. The work will be performed in Coos Bay, Oregon, with administrative oversight based in Portland. Primary coordination for the project is managed by Julia Carlton and Brandon Lasich of the U.S. Army Corps of Engineers.
W071 Endist Portland

POSTED

4 days ago

DEADLINE

N/A
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NAICS: 237120
New
Federal
Earthwork and Grading
Niwc Atlantic

POSTED

4 days ago

DEADLINE

in 4 days
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NAICS: 237120
New
SLED
Guardrail InstallationThe City of Oakley in California is seeking a subcontractor for a guardrail installation project aimed at enhancing roadside safety. This subcontract falls under NAICS code 237120 and is centered in Oakley, California, within the 94561-3964 zip code area. The project was officially posted on August 24, 2026. Further details regarding the project can be accessed through the provided CEQAnet link.
City of Oakley

POSTED

4 days ago

DEADLINE

N/A
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NAICS: 237120
New
SLED
Civil and Site Preparation WorkThe Civil and Site Preparation Work subcontract, managed by the New Mexico Purchasing agency, involves comprehensive site development for a water storage tank. The scope of work includes site clearing, grading, excavation, erosion control, and backfilling, as well as the preparation of the foundation through the installation of a ringwall or slab. This opportunity is categorized under NAICS code 237120 and was posted on August 23, 2026. Interested parties must submit their responses by the deadline of September 23, 2026, at 8:00 PM.
Purchasing

POSTED

5 days ago

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in 26 days
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