Federal NAICS Codes

NAICS 333994: Industrial Process Furnace and Oven Manufacturing

Explore obligations, trends, recent awards, and incumbent contractors for NAICS 333994.

NAICS 333994 federal market metrics

Total obligations
$447.8M
Total awards
3,376 awards
Active obligations
$62.7M
Size standard
500 employees

What this NAICS covers

NAICS 333994 covers manufacturing industrial process furnaces and ovens used for heat treating, melting, annealing, sintering, and thermal processing, including custom-engineered kiln shells, burners, control panels, and associated refractory linings.

Federal opportunities under 333994 typically involve delivery of factory-built process furnace systems, replacement furnace components, manufacturer drawings, spare parts lists, factory acceptance testing, and performance qualification protocols.

FY2025 snapshot

Obligations
$25.3M
Awards
159
Average award
$159K
Change from FY2024
-8.4%

Recent awards

Search contractors

$22,400

ALKALI SCIENTIFIC, LLC

Department of Energy

PIID
89243326PFE000978
PSC
4430 - INDUSTRIAL FURNACES, KILNS, LEHRS, AND OVENS

$71,030

CONSOLIDATED ENGINEERING COMPANY, INC.

United States Mint

PIID
2031JG26F00147
PSC
J044 - MAINT/REPAIR/REBUILD OF EQUIPMENT- FURNACE, STEAM PLANT, AND DRYING EQUIPMENT; NUCLEAR REACTORS

$62,230

BENKO PRODUCTS INC

Federal Aviation Administration

PIID
6973GH26P02089
PSC
5450 - MISCELLANEOUS PREFABRICATED STRUCTURES

$146,301

TPS LLC

Federal Bureau of Investigation

PIID
15F06726P0000559
PSC
3695 - MISCELLANEOUS SPECIAL INDUSTRY MACHINERY

$21,967

ALPHA SUPPLY LLC

Defense Logistics Agency

PIID
SPE8E826V0848
PSC
4430 - INDUSTRIAL FURNACES, KILNS, LEHRS, AND OVENS

$16,978

SECO/WARWICK CORPORATION

United States Mint

PIID
2031JG26F00090
PSC
J044 - MAINT/REPAIR/REBUILD OF EQUIPMENT- FURNACE, STEAM PLANT, AND DRYING EQUIPMENT; NUCLEAR REACTORS

$3,880

GOVPARTS LLC

Defense Logistics Agency

PIID
SPE8E826V0666
PSC
4440 - DRIERS, DEHYDRATORS, AND ANHYDRATORS

FAQ

What work fits NAICS 333994?
  • Designing and manufacturing box and belt heat-treating furnaces with specified temperature uniformity, atmosphere control, and integrated control panels.
  • Producing vacuum or controlled-atmosphere furnaces for melting and brazing operations, including welded vacuum chambers and seals.
  • Fabricating industrial kilns and high-temperature ovens with specified refractory linings and loading fixtures for sintering ceramic components.
  • Supplying spare furnace components such as burners, temperature controllers, thermocouples, heating elements, and preassembled refractory modules.
When is NAICS 333994 a weak fit?
  • Commercial HVAC or industrial building heating systems: air handlers and building heaters lack the high-temperature process controls and refractory construction of process furnaces.
  • On-site furnace repair and refractory patching contracts: maintenance-only work that does not include manufacturing or supplying new furnace systems falls outside this manufacturing code.
  • Heat-treating service providers and contract processing labs: offering thermal processing for customer parts does not involve manufacturing furnaces and is outside this code.
What solicitation language points to NAICS 333994?
  • Solicitation lists line items for supply and delivery of a furnace model with technical specifications for maximum temperature, atmosphere control, and cooling rates.
  • Evaluation criteria require factory acceptance testing reports, heat-up and soak performance curves, and calibration certificates for temperature sensors.
  • Contract deliverables include manufacturer drawings, refractory specification sheets, spare parts list, and warranty for manufactured furnace equipment.

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