333994

Analysis

NAICS 333994 is the 2022 national industry for industrial process furnace and oven manufacturing, part of 33399 (All Other General Purpose Machinery Manufacturing). Census lists 21 example activities under it in the official index.

County Business Patterns counts 319 US establishments in this code in 2023, employing 11,055 people at an average annual payroll of $77,006 per employee (64th percentile of national industries). 22% of the establishments have fewer than five employees, which points to larger operations.

Its index entries, the activities Census uses to assign businesses to this code, include ceramic kilns and furnaces manufacturing, core baking and mold drying ovens manufacturing, dielectric industrial heating equipment manufacturing and distillation ovens, charcoal and coke, manufacturing, among 21 in all.

Its goods appear in 15 statistical lines of the US tariff schedule, mostly under headings 8514 (industrial or laboratory electric furnaces and ovens…) and 8417 (industrial or laboratory furnaces and ovens, including…). That link is how import data is matched to domestic producers, for example in trade-remedy cases.

Census lists 3 related activities that belong elsewhere, most often in 333241, 333248 and 333998. Businesses that do several things are classified by their primary activity, the one that generates the most value, so check those boundaries before settling on this code.

For example, manufacturing bakery ovens are classified in 333241 (Food Product Machinery Manufacturing) instead.