Fourinox, Inc.
Green Bay, WI
- UEI
- FM6KEJSWSPF1
- CAGE
- 0AYR9
- Primary NAICS
- 332420 Metal Tank (Heavy Gauge) Manufacturing
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- Corporate family
-
-
- L75NNL5AQ3Y8
-
- SAM.gov registration date
- Physical address
- 1015 Centennial St, Green Bay, WI 54304, USA
- Website
- fourinox.com
- Founded
- 1974
- Employees
- 11-50
- Estimated annual revenue
- $1M-$10M
- Industry
-
- Industrials
- Capital Goods
- Industrial Conglomerates
- Industrials & Manufacturing
- SIC code
- 34 Fabricated Metal Products
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $482,760 |
| FY2025 | $146,850 |
| FY2024 | $103,200 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of the Navy | $482,760 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Fluor Marine Propulsion, LLC | 89233018CNR000004 | $862,460 | |
| Atlantic Diving Supply, Inc. | SPE8EX24F10G5 | $2,014,800 |
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Avantech, LLC | Columbia, SC | 332420 Metal Tank (Heavy Gauge) Manufacturing |
| Energysolutions Services Inc. | Charlotte, NC | 562211 Hazardous Waste Treatment and Disposal |
| Aries Filterworks LLC | Camden, NJ | 325211 Plastics Material and Resin Manufacturing |
| Hydrologix Inc. | Chesapeake, VA | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
| Culligan | — | 238990 All Other Specialty Trade Contractors |
About the company
Fourinox, Inc., a service-disabled veteran-owned small business (SDVOSB) and veteran-owned business (VOSB) based in Green Bay, Wisconsin, manufactures custom metal fabrication and industrial water purification equipment for naval nuclear applications as a prime contractor (95% of recent awards) under total small business set-asides. The company specializes in certified demineralizer tanks, disposal containers, and pressure vessels for radiological water processing and shipyard maintenance, operating as a Subchapter S corporation with a subsidiary, Green Point LLC.
Fourinox's customer footprint is heavily concentrated with a single customer. The Department of the Navy Naval Sea Systems Command accounts for 100% of combined potential value across all awards—35 awards totaling $14.6 million. The Defense Logistics Agency and the Department of Energy National Nuclear Security Administration together account for three awards with no stated dollar magnitude. This singular customer dependence reflects Fourinox's specialization in naval nuclear water purification equipment rather than portfolio diversification; NAVSEA is the sole customer for the company's core capability set.
Recent prime work includes a $482,760 firm fixed-price definitive contract awarded May 4, 2026, for disposal containers nuclear at Kittery, Maine; a $146,850 firm fixed-price purchase order awarded July 30, 2025, for a 3 cubic foot demineralizer unit for the Puget Sound Naval Shipyard (reflecting a demonstrated track record: this represents Fourinox's third prime contract from the Navy for demineralizer fabrication since June 2021, with cumulative awards of approximately $374,000); and a $103,200 purchase order awarded July 5, 2024, for eight 3 cubic foot round vertical 304 stainless steel demineralizer tanks for radiological water processing, also at Puget Sound. All three contracts carry firm fixed prices and total small business set-aside designations. Work is performed at naval shipyards and intermediate maintenance facilities (Kittery, Maine and Puget Sound, Washington) and at customer facilities.
The primary NAICS categories are Metal Tank (Heavy Gauge) Manufacturing (14 awards) and Other Commercial and Service Industry Machinery Manufacturing (13 awards combined across two similar codes), with top PSC codes centered on Water Purification Equipment (22 awards) and Storage Tanks (5 awards). Award velocity has been sparse—one award in 2020, two in 2021, three in 2024, and one each in 2025 and 2026—suggesting a small, highly specialized supplier rather than a scaled government contractor. Combined dollars obligated ($19.7 million) exceed combined potential value ($14.6 million), indicating invoice activity above contract ceilings. Fourinox subcontracts minimally (2 of 39 awards): a sub-award under Fluor Marine Propulsion, LLC for radioactive liquid waste tanker work under the Naval Nuclear Laboratory management and operation contract (September 2024) and a sub-award under Atlantic Diving Supply, Inc. for a hazardous waste tank (April 2024).
SBA capabilities narrative
Comprehensive metal fabrication including ASME certified pressure vessels for the food, pharmaceutical, biopharmaceutical and specialty chemical industries.
Quick answers
Is Fourinox, Inc. registered in SAM.gov?
Yes. Fourinox, Inc.'s SAM.gov registration is active through October 7, 2027.
What is Fourinox, Inc.'s CAGE code?
Fourinox, Inc.'s CAGE code is 0AYR9, and its Unique Entity ID (UEI) is FM6KEJSWSPF1.
How much has Fourinox, Inc. received in federal contracts?
Federal contracts obligated $146,850 to Fourinox, Inc. in fiscal year 2025 and $732,810 in fiscal years 2023 through 2027.
How does Fourinox, Inc. rank among federal contractors?
Fourinox, Inc. ranked #42 in PSC 4610 and #56 in PSC 46 in FY2025.
What is Fourinox, Inc.'s most recent federal award?
Fourinox, Inc.'s most recent federal contract award is Disposal containers nuclear (N3904026C1004), from Naval Sea Systems Command (Navy), on May 4, 2026.
On GovTribe
See Fourinox, Inc.'s full federal record
- Federal contract awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors