NAICS Code 237120: Oil and Gas Pipeline and Related Structures Construction
National industry
SBA small business size standard: $45 million in average annual receipts
Definition
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.
Government contracts for this service: PSC Y1NA Construction of Fuel Supply Facilities and PSC Y1GC Construction of Fuel Storage Buildings
Code facts
- Part of
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23
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237
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2371
- 23712
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2371
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237
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23
- Contract awards
- 110 In the last 12 months
- Contract obligations
- $594,988,092 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 237120
- Compressor, metering and pumping station, gas and oil pipeline, construction
- Construction management, oil and gas pipeline
- Construction management, oil refinery and petrochemical complex
- Corrosion protection, underground pipeline and oil storage tank
- Distribution line, gas and oil, construction
- Gas main construction
- Gathering line, gas and oil field, construction
- Natural gas pipeline construction
- Natural gas processing plant construction
- Oil and gas field distribution line construction
- Oil pipeline construction
- Oil refinery construction
- Petrochemical plant construction
- Petroleum refinery construction
- Pipe lining (except thermal insulating) contractors
- Pipeline construction on oil and gas field gathering lines to point of distribution on a contract basis
- Pipeline rehabilitation contractors
- Pipeline wrapping contractors
- Pipeline, gas and oil, construction
- Pumping station, gas and oil transmission, construction
- Refinery, petroleum, construction
- Service line, gas and oil, construction
- Storage tank, natural gas or oil, tank farm or field, construction
Looking for another activity? Search the NAICS code lookup or browse business activities from A to Z.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $209,765 |
| FY2026 | $237,558,463 |
| FY2025 | $594,988,092 |
| FY2024 | $829,470,187 |
| FY2023 | $706,611,575 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Nova Group, Inc. | $58,569,009 | |
| 2 | Goshawk, LLC | $44,713,213 | |
| 3 | Chenega Reliable Services LLC | $13,129,494 | |
| 4 | S & B Infrastructure LTD | $12,927,064 | |
| 5 | Environmental Chemical Corporation | $11,722,296 | |
| 6 | Dawson Enterprises, Inc. | $9,424,416 | |
| 7 | Weston Solutions Inc. | $7,227,825 | |
| 8 | Reliable Contracting Group, LLC | $6,900,631 | |
| 9 | Black Micro Corporation | $6,343,698 | |
| 10 | SES Energy Services LLC | $5,279,538 |
See the full FY2025 ranking of NAICS 237120 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Army | $150,079,194 | |
| 2 | Defense Logistics Agency | $55,731,961 | |
| 3 | Department of the Navy | $10,369,062 | |
| 4 | Department of Veterans Affairs | $5,051,387 | |
| 5 | Department of Homeland Security | $4,849,399 | |
| 6 | Department of Justice | $3,635,125 | |
| 7 | Department of the Interior | $3,129,859 | |
| 8 | Department of Agriculture | $1,804,563 | |
| 9 | Department of Transportation | $1,445,046 | |
| 10 | Air Force | $1,160,217 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Y1NA Construction of Fuel Supply Facilities | $97,410,321 | |
| 2 | Y1GC Construction of Fuel Storage Buildings | $80,444,621 | |
| 3 | Z2NA Repair or Alteration of Fuel Supply Facilities | $39,283,373 | |
| 4 | H999 Other Quality Control, Testing and Inspection Services: Miscellaneous | $4,291,854 | |
| 5 | Z2FF Repair or Alteration of Penal Facilities | $3,628,099 | |
| 6 | C211 Architect – Engineer Services (including landscaping, interior layout, and designing) | $2,381,392 | |
| 7 | Z2AZ Repair or Alteration of Other Administrative Facilities and Service Buildings | $1,994,998 | |
| 8 |
R408 Program Management/ |
$1,642,772 | |
| 9 | C1NA Architect and Engineering – Construction: Fuel Supply Facilities | $1,348,337 | |
| 10 | Z2GC Repair or Alteration of Fuel Storage Buildings | $968,576 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | Alaska | $61,135,638 | |
| 2 | Tennessee | $13,365,265 | |
| 3 | Texas | $12,854,119 | |
| 4 | California | $10,078,224 | |
| 5 | Oklahoma | $7,261,943 | |
| 6 | Northern Mariana Islands | $6,343,698 | |
| 7 | Washington | $4,974,628 | |
| 8 | Maryland | $4,606,876 | |
| 9 | South Carolina | $4,429,530 | |
| 10 | Oregon | $4,426,636 | |
| 11 | Guam | $4,106,439 | |
| 12 | Alabama | $2,535,505 | |
| 13 | Arizona | $2,288,870 | |
| 14 | Virginia | $2,284,164 | |
| 15 | New York | $2,027,091 | |
| 16 | Florida | $1,921,615 | |
| 17 | Indiana | $1,810,905 | |
| 18 | Georgia | $1,744,964 | |
| 19 | North Dakota | $1,673,252 | |
| 20 | Montana | $1,612,490 | |
| 21 | North Carolina | $1,567,810 | |
| 22 | Delaware | $1,445,234 | |
| 23 | West Virginia | $979,537 | |
| 24 | Hawaii | $919,880 | |
| 25 | Louisiana | $838,761 | |
| 26 | South Dakota | $676,879 | |
| 27 | Nevada | $425,670 | |
| 28 | Kansas | $423,650 | |
| 29 | Pennsylvania | $404,163 | |
| 30 | Wisconsin | $240,000 | |
| 31 | Colorado | $136,833 | |
| 32 | Mississippi | $136,047 | |
| 33 | Puerto Rico | $127,294 | |
| 34 | Missouri | $118,358 | |
| 35 | Kentucky | $90,009 | |
| 36 | Connecticut | $88,539 | |
| 37 | Ohio | $88,177 | |
| 38 | Nebraska | $55,416 | |
| 39 | New Jersey | $30,879 | |
| 40 | Michigan | $29,000 | |
| 41 | Iowa | $7,969 | |
| 42 | New Hampshire | $3,326 |
Show all 42
Shares are of everything obligated under NAICS 237120 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 31 more
Latest 41 of 1,774 listed here. See the rest on GovTribe.
Size standard history
Federal Register rules that named this code
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 237120?
NAICS 237120 is Oil and Gas Pipeline and Related Structures Construction, a national industry in NAICS 23, Construction.
What is the NAICS code for gas main construction?
The NAICS code for gas main construction is 237120, Oil and Gas Pipeline and Related Structures Construction.
What is the NAICS code for oil pipeline construction?
The NAICS code for oil pipeline construction is 237120, Oil and Gas Pipeline and Related Structures Construction.
What is the NAICS code for pipeline wrapping contractors?
The NAICS code for pipeline wrapping contractors is 237120, Oil and Gas Pipeline and Related Structures Construction.
When did the size standard for NAICS 237120 last change?
The most recent Federal Register rule on record that names NAICS 237120 in the SBA's size standards is "Small Business Size Standards: Adjustment of Monetary-Based Size Standards, Disadvantage Thresholds, and 8(a) Eligibility Thresholds for Inflation" (87 FR 69118), published Nov 17, 2022 and effective Dec 19, 2022.
How much do federal agencies spend under NAICS 237120?
Federal contracts under NAICS 237120 obligated $594,988,092 in fiscal year 2025 and $2,368,838,081 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 237120?
The contractors with the most obligated under NAICS 237120 in fiscal years 2026 and 2027 are Nova Group, Inc. ($58,569,009); Goshawk, LLC ($44,713,213); and Chenega Reliable Services LLC ($13,129,494).
Which agencies buy the most under NAICS 237120?
The agencies that obligated the most under NAICS 237120 in fiscal years 2026 and 2027 are Department of the Army ($150,079,194), Defense Logistics Agency ($55,731,961) and Department of the Navy ($10,369,062).
Which PSC codes are used with NAICS 237120?
The PSC codes with the most obligated under NAICS 237120 in fiscal years 2026 and 2027 are Y1NA Construction of Fuel Supply Facilities, Y1GC Construction of Fuel Storage Buildings and Z2NA Repair or Alteration of Fuel Supply Facilities.
Where is the work under NAICS 237120 performed?
By place of performance, the states with the most contract obligations under NAICS 237120 over the last 12 months are Alaska ($61,135,638), Tennessee ($13,365,265) and Texas ($12,854,119).
What is the latest contract opportunity under NAICS 237120?
The latest contract opportunity under NAICS 237120 is Z1DA--NRM-CON-663A4-27-001 Under Dispenser Containment (UDC) and sump installation at VAMC American Lake, solicitation from Veterans Integrated Service Network 20 (VHA), posted November 4, 2026.
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See everything under NAICS 237120
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