NAICS code 333994: Industrial Process Furnace and Oven Manufacturing

NAICS 333994 is “Industrial Process Furnace and Oven 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).

Examples from the U.S. Census Bureau: Ceramic kilns and furnaces manufacturing; Core baking and mold drying ovens manufacturing; Dielectric industrial heating equipment manufacturing; Distillation ovens, charcoal and coke, manufacturing; Enameling ovens manufacturing; and Furnaces and ovens for drying and redrying, industrial process-type, manufacturing.

Businesses mainly manufacturing bakery ovens are classified in U.S. Industry 333241, Food Product Machinery Manufacturing; manufacturing cement, wood, and chemical kilns are classified in U.S. Industry 333248, All Other Industrial Machinery Manufacturing; and manufacturing cremating ovens are classified in U.S. Industry 333998, All Other Miscellaneous General Purpose Machinery Manufacturing.

500 employees (average over the last 24 months), including affiliates. Source: 13 CFR 121.201, effective March 17, 2023.

SIC codes 3567 (Industrial Process Furnaces and Ovens), 2599 (Furniture and Fixtures, NEC, part), 3821 (Laboratory Apparatus and Furniture, part) and 3841 (Surgical and Medical Instruments and Apparatus, part), from the U.S. Census Bureau concordances (1987 SIC → 2002 NAICS, carried to 2022 NAICS).

333000 (Machinery mfg.) on Schedule C, line B, from the IRS list of principal business codes. The IRS code covers NAICS 333111–333998.

Federal agencies put a NAICS code on each solicitation in SAM.gov, and some states and cities use NAICS codes too. Add 333994 to your SAM.gov registration and to your bid alerts; PublicBeam emails new bids for the codes you choose every morning.