Skip to main contentPsst! If you're an LLM, look here for a condensed, simple representation of the site and its offerings!

LiveFree Webinar — Wednesday, October 14 at 2:00 PM ET

Register Free →
CLEATUS
Get CLEATUS
← Back to NAICS Codes
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.

44
Active Contracts
$449.2M
Total Obligations (12mo)
187
Awarded Contracts (12mo)
111
Contractors Awarded (12mo)
2
Median Bidders per Award
-14.8%
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.

Small Business Size Standard

The SBA threshold that decides who can bid NAICS 237120 work as a small business.

$45.0M
Applies to the whole industry code

The SBA cap for this NAICS (13 CFR 121.201). A business at or under it can self-certify as small for work in this code, which is what makes it eligible for a small-business set-aside. The cap is set per NAICS, so the same company can be small in one code and not in another.

13 CFR 121.201, effective January 1, 2026. The SBA revises the table roughly once a year.

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, LLC$35.5M4
UTE COBRA CASTELLANO COMBUSTIBLES$28.5M2
RELIABLE CONTRACTING GROUP, LLC$17.2M3
S & B INFRASTRUCTURE LTD$12.9M1
GOSHAWK, LLC$12.0M4
GSI-ENET JV LLC$11.0M2

Top Agencies

Federal agencies directing the most contract spending toward NAICS 237120.

Department Of Defense65 awards$363.1M
Department Of Defense (dod)83 awards$64.9M
Department Of Homeland Security6 awards$3.4M
Department Of Justice2 awards$3.3M
FA5270 18 Cons Pk1 award$3.3M
Department Of Agriculture4 awards$3.1M
Department Of The Interior7 awards$2.7M
0906 Aq Co Contracting Bat1 award$2.3M
Department Of Transportation1 award$1.4M
Department Of Veterans Affairs3 awards$645K

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. · 4,087 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

4,087

91% of 4,482 total awards

Bidder Count Distribution by Fiscal Year

Share of reported awards in each bidder-count bracket per federal fiscal year.

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%
4,08791% of 4,482
23712NAICS Industry
Fewer Bidders244%
4,08791% of 4,482
2371Industry Group
Utility System Construction
Fewer Bidders245%
44,18789% of 49,754
237Subsector
Fewer Bidders235%
162,38989% of 181,740
23Sector
Construction
Fewer Bidders240%
1,132,66189% of 1,275,170

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

Explore contracts across multiple NAICS codes Browse all NAICS Codes

Dotted
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
PW2026-05 - Highway 43 Pipeline Relocation Project
Solicitation # PW2026-05
The City of Shafter is seeking bids for the Highway 43 Pipeline Relocation Project, identified by solicitation number PW2026-05. This local government project is located in Shafter, California, within the 93263 zip code area. Interested parties must submit their responses by the deadline of October 30, 2026, at 11:00 AM PT. Detailed bid documents and any subsequent addenda are available through the official City of Shafter website or the designated procurement portal.
City of Shafter

POSTED

5 days ago

DEADLINE

in 17 days
View Details
NAICS: 237120
New
Federal
Kingsley Field Fueling System Repairs
Solicitation # 25P025775
The Kingsley Field Fueling System Repairs project, managed by the Department of Defense and USACE Endist Omaha, involves the design and construction of a new fueling facility at Kingsley Field AFB to replace an obsolete system. The scope of work requires the complete demolition of existing fueling systems and buildings, followed by the installation of new offloads and a truck fillstand with secondary containment, remote containment basins, receipt piping, and an Automatic Tank Gauge system. Additional infrastructure includes a pump shelter with snow shields, fencing, and required asphalt pavement. This project carries significant environmental and safety requirements, including the handling and disposal of petroleum-contaminated soil and groundwater, PFAS contamination, lead-based paint, and asbestos-containing materials. Contractors must adhere to EM 385-1-1 and 29 CFR 1926.65 safety standards and implement a Site Safety and Health Plan and a State of Oregon-approved Storm Water Pollution Prevention Plan. Technical qualifications must include experience with electrical installations in hazardous locations and a bonding capacity of 35 million dollars or more. As a sources-sought effort under NAICS 237120, the government is seeking capable prime contractors to provide technical narratives and business identifiers by October 29, 2026.
W071 Endist Omaha

POSTED

5 days ago

DEADLINE

in 16 days
View Details
NAICS: 237120
New
SLED
150016 City of Reklaw - Reklaw Natural Gas FY2023 NGDISM Pipeline Replacement
Solicitation # 6ac807ccbc345a797ba9d176
The City of Reklaw is soliciting bids for the Reklaw Natural Gas FY2023 NGDISM Pipeline Replacement project. The scope of work involves the replacement of approximately 69,452 linear feet of 6 inch MDPE gas line, including the installation of valves and fittings, tying into existing gas lines, reconnecting services, and abandoning the old gas line. This local government project will be performed in Lufkin, Texas. Interested parties must submit their responses by the deadline of November 5, 2026. The primary point of contact for this solicitation is Jed Morris.
City of Reklaw

POSTED

6 days ago

DEADLINE

in 23 days
View Details
NAICS: 237120
New
SLED
Venoco Pipeline Abandonment Project
Solicitation # EPWBPECO
City of Los Angeles, Department of Public Works, Bureau of Engineering

POSTED

6 days ago

DEADLINE

in 15 days
View Details
NAICS: 237120
New
Federal
Joint Base Langley Eustis Tank Repairs
Solicitation # W9128F27RA018
Solicitation W9128F27RA018 is a firm fixed-price, design-build construction project for API 653 tank repairs at Joint Base Langley-Eustis, Virginia, supporting the Defense Logistics Agency. This total small business set-aside, under NAICS 237120, has an estimated construction magnitude between 4 million and 8 million dollars and an estimated period of performance of 455 days. The scope of work is divided into repair and maintenance for Tank 2186, including the replacement of the tank roof, repair of various piping systems, replacement of spiral stairs, and application of new tank and piping coatings. Additionally, the project requires the procurement, installation, and commissioning of automatic tank gauging equipment and software for Tanks 2182 through 2187, with an optional CLIN for the disposal of asbestos-containing materials. The government will evaluate proposals based on technical approach, schedule, past performance, and price, with the technical approach and schedule weighted slightly more heavily than past performance. Key deliverables include 65 percent and 100 percent design submittals, a Contractor Quality Control plan, and Activity Hazard Analysis. The contractor must adhere to API 653 standards, Davis-Bacon prevailing wage rates, and strict environmental regulations regarding lead-based paint. Proposals must be submitted via PIEE in three separate files, including a technical volume, a past performance volume, and a pricing schedule in Excel format. Final acceptance requires a joint Contractor-Government turnover inspection and validation of laboratory samples by a DoD ELAP certified laboratory.
W071 Endist Omaha

POSTED

6 days ago

DEADLINE

in 7 days
View Details
NAICS: 237120
SLED
Construction of Compressed Natural Gas (CNG) Fueling Facility
Solicitation # RFP 2026-05
The Birmingham-Jefferson County Transit Authority (BJCTA) is soliciting proposals under RFP 2026-05 for the construction of a complete and operational Compressed Natural Gas (CNG) Fueling Facility located at 373 Forestdale Blvd, Birmingham, AL. The scope of work encompasses selective demolition of existing slabs and utilities, site grading for positive drainage, and the full installation and integration of CNG mechanical, electrical, controls, detection, ventilation, and safety systems. The project concludes with startup testing, commissioning, and the provision of training and O&M documentation. Proposals must be submitted electronically via the PlanetBids Vendor Portal by November 19, 2026, at 2:00 pm. Award will be granted to the responsible proposer determined to be most advantageous to BJCTA, with price serving as the single most heavily weighted individual factor, though combined non-price factors are more important overall. Evaluation is based on a 100-point scale, focusing heavily on relevant CNG and fleet fueling construction experience, technical complexity, and past performance on publicly or federally funded projects. Mandatory requirements, including Alabama contractor licensing, bonding capability, and debarment status, will be evaluated on a pass/fail basis. The contract is subject to stringent federal and state regulations, including Federal Transit Administration (FTA) requirements, the Build America, Buy America (BABA) Act, and the Davis-Bacon and Related Acts. Contractors must comply with 49 CFR Part 26 DBE requirements, EEO and civil rights certifications, and ADA Title I accessibility standards. Financial security is required via a 5% bid bond, with 100% performance and payment bonds required upon contract execution. Payment administration will utilize AIA Documents G702 and G703, with the Architect serving as the primary point of contact for certifying payments.
Procurement Department of Birmingham-Jefferson County Transit Authority

POSTED

8 days ago

DEADLINE

in about 1 month
View Details
NAICS: 237120
SLED
Gas Valve Installation and Main Tie-in ServicesThis subcontract for Gas Valve Installation and Main Tie-in Services involves performing connection and control installations for prime contractors on gas utility projects within the City of Commerce, Georgia. The scope of work includes the installation of 2-inch and 4-inch PE valves, 2-inch PE main tie-ins, and various steel tie-ins using tap, stop, or bottom out methods. Additionally, the contractor is responsible for executing short-side and long-side service taps for PE lines ranging from 1/2 inch to 2 inches to ensure secure system tie-ins. To be eligible, contractors must provide necessary operator qualifications and PHMSA drug and alcohol testing data. The solicitation was posted on October 5, 2026, with a response deadline of November 6, 2026. This project falls under NAICS code 237120 and focuses on the delivery of completed valve installations and integrated system connections for the municipal gas infrastructure.
City of Commerce

POSTED

8 days ago

DEADLINE

in 24 days
View Details
NAICS: 237120
SLED
Polyethylene Gas Main Installation and Boring ServicesThis subcontract for Polyethylene Gas Main Installation and Boring Services involves the installation of 2-inch and 4-inch polyethylene gas mains for prime contractors on City of Commerce, Georgia utility projects. The scope of work requires the use of open-cut, standard boring, and directional rock boring methods, utilizing specialized directional drilling rigs and fusion equipment to deliver fully installed and tested mains. Compliance is a critical component of the agreement, requiring all employees to hold necessary operator qualifications. Additionally, the contractor must submit quarterly PHMSA drug and alcohol testing data. The solicitation was posted on October 5, 2026, with a response deadline of November 6, 2026.
City of Commerce

POSTED

8 days ago

DEADLINE

in 24 days
View Details
NAICS: 237120
SLED
27-002 Gas Main Installer
Solicitation # RFP 27-002
The City of Commerce is soliciting proposals for a standby professional service provider to handle natural gas main installations and repairs within its service area. The contract is for an initial term of one year, with the option to renew annually for up to three years. The scope of work includes various installation tasks such as polyethylene gas main laying, boring, valve installation, and tie-ins for 2-inch and 4-inch mains, as well as rock removal. Proposals will be evaluated by a committee based on cost (40 points), proposal completeness (20 points), the quality of previous similar projects (20 points), project understanding (15 points), and the ability to meet timelines (5 points). Successful bidders must provide a bid bond equal to 5% of the base proposal and a performance bond equal to 100% of the contract amount upon award. Insurance requirements include general liability coverage of at least $1,000,000 per incident and Georgia-mandated workman's compensation. Contractors must comply with the laws of the State of Georgia, including the Illegal Immigration Reform and Enforcement Act of 2011 and E-Verify registration. Additionally, the contractor must provide operator qualifications for all employees and submit PHMSA drug and alcohol testing data to the City on a quarterly basis. Payment is processed 30 days after invoice or delivery, contingent upon the completion of all construction and successful testing of installed products. Proposals must be submitted in a sealed package by November 6, 2026, and must include an executive summary, at least three Georgia-based client references, a W-9, and a completed vendor master form. Submissions require two paper copies and one electronic copy in PDF or Word format, with technical requirements provided in Excel.
City of Commerce

POSTED

8 days ago

DEADLINE

in 24 days
View Details
NAICS: 237120
SLED
Specifications for Line 9 Marker Ball and Static Line Repair
Solicitation # keys-energy-services-24-26-2027
Keys Energy Services Engineering is soliciting bids for the Line 9 Marker Ball and Static Line Repair project under solicitation number keys-energy-services-24-26-2027. This local government contract in Florida focuses on specialized repair work for marker balls and static lines. Interested parties must submit their responses by the deadline of November 2, 2026, at 3:00 PM. The procurement process is managed by Tyler Randolph, who serves as the primary point of contact for the agency. Detailed specifications and submission guidelines are available through the official vendor link provided by the organization.
Keys Energy Services — Engineering

POSTED

12 days ago

DEADLINE

in 20 days
View Details
NAICS: 237120
Awarded
Federal
FY 26 Roush Lake Diesel Fill Tube Replacement
Solicitation # W912P626QA030
The U.S. Army Corps of Engineers, Chicago District, is seeking quotes under solicitation W912P626QA030 for construction work at the J. Edward Roush Lake Dam in Huntington, Indiana. This project is a total small business set-aside under NAICS code 237120. The scope of work consists of two firm-fixed-price line items: the replacement of a 20-foot diesel tank fill tube using specific carbon steel piping and vinyl paint systems, and the installation of an NFPA 30 compliant emergency pressure relief vent on a 2,000-gallon diesel tank. The contractor must provide all necessary labor, materials, and equipment, and is required to provide a one-year warranty on both materials and installation. All quotes must be submitted electronically via the PIEE Solicitation Module, and firms must be registered in SAM.gov. Technical and administrative questions are due by September 3, 2026, and a site visit is highly recommended to coordinate access to the dam.
W072 Endist Chicago

POSTED

12 days ago

DEADLINE

N/A
View Details
NAICS: 237120
Closed
SLED
Composite Elevated Tank InstallationThis subcontract involves the supply and installation of a 1,000,000-gallon composite elevated tank for prime contractors working on Lowndes County Industrial Development Authority projects. The scope of work encompasses the fabrication of the composite structure as well as the hoisting and erection process utilizing high-capacity cranes to deliver a fully operational system. Managed by MPTAP in Mississippi under NAICS code 237120, the project requires specific AD-1048 and RD Instruction 1940-Q certifications depending on the contract value. The solicitation was posted on September 30, 2026, with a response deadline set for October 6, 2026.
MPTAP

POSTED

13 days ago

CLOSED

7 days ago
View Details

Win Contracts in Oil and Gas Pipeline and Related Structures Construction

Get AI-powered intelligence on NAICS 237120 procurement

Real-time contract opportunities for NAICS 237120 (Oil and Gas Pipeline and Related Structures Construction)

AI-powered matching based on your business capabilities and past performance

Competitive analysis of contractors winning awards in this industry

Automated alerts when new opportunities are posted

Miguel
Hillary
Keith Deutsch
Christine

Join 750+ contractors already using CLEATUS