# NAICS 333994: Industrial Process Furnace and Oven Manufacturing

Breadcrumb: [NAICS codes](https://bidrover.com/naics) › [333994 Industrial Process Furnace and Oven Manufacturing](https://bidrover.com/naics/333994)

This U.S. industry comprises establishments primarily engaged in manufacturing industrial process ovens, induction and dielectric heating equipment, and kilns (except cement, chemical, wood). Included in this industry are establishments manufacturing laboratory furnaces and ovens.

- NAICS code: 333994
- Title: Industrial Process Furnace and Oven Manufacturing
- Sector: 31-33 Manufacturing
- Subsector: 333 Machinery Manufacturing
- Industry group: 3339 Other General Purpose Machinery Manufacturing
- NAICS industry: 33399 All Other General Purpose Machinery Manufacturing
- SBA size standard: 500 employees
- Open bids on BidRover: 0

## Open bids (0)

No open bids cite this code right now.

## Frequently asked questions

### What is NAICS code 333994?

NAICS 333994 is "Industrial Process Furnace and Oven Manufacturing" in the 2022 North American Industry Classification System, in sector 31-33 (Manufacturing). This U.S. industry comprises establishments primarily engaged in manufacturing industrial process ovens, induction and dielectric heating equipment, and kilns (except cement, chemical, wood). Included in this industry are establishments manufacturing laboratory furnaces and ovens.

### What is the SBA size standard for NAICS 333994?

A business is small under NAICS 333994 at or below 500 employees, including affiliates (13 CFR 121.201). Confirm the standard named in each solicitation.

### How many government bids are open under NAICS 333994?

No open bid in BidRover cites NAICS 333994 right now. Many state and local notices do not list a NAICS code, so a keyword alert for this work catches more of them.

### How do I get alerts for NAICS 333994 bids?

Save an alert on this page. A free account gets new matching bids by weekly email; the Team plan ($19/mo) sends daily alerts with match scores, the buyer, source link and documents.

## Related NAICS codes

- [333241 Food Product Machinery Manufacturing](https://bidrover.com/naics/333241)
- [333248 All Other Industrial Machinery Manufacturing](https://bidrover.com/naics/333248)
- [333998 All Other Miscellaneous General Purpose Machinery Manufacturing](https://bidrover.com/naics/333998)
- [333991 Power-Driven Handtool Manufacturing](https://bidrover.com/naics/333991)
- [333992 Welding and Soldering Equipment Manufacturing](https://bidrover.com/naics/333992)
- [333993 Packaging Machinery Manufacturing](https://bidrover.com/naics/333993)
- [333995 Fluid Power Cylinder and Actuator Manufacturing](https://bidrover.com/naics/333995)
- [333996 Fluid Power Pump and Motor Manufacturing](https://bidrover.com/naics/333996)

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Code titles and definitions: U.S. Census Bureau, North American Industry Classification System (NAICS), 2022 (https://www.census.gov/naics/). Size standards: U.S. Small Business Administration, Small Business Size Standards, 13 CFR 121.201, eCFR text current as of 2026-10-21 (https://www.ecfr.gov/current/title-13/section-121.201).

BidRover lists bids from official public sources. It is not an issuing authority; confirm the NAICS code and size standard named in each solicitation.