This U.S. Census Bureau NAICS-based industry comprises establishments primarily engaged in manufacturing industrial process furnaces, ovens, induction and dielectric heating equipment, and kilns (except cement, chemical, wood).

Cross-References. Establishments primarily engaged in--

• Manufacturing bakery ovens--are classified in U.S. Industry 333294, Food Product Machinery Manufacturing;
• Manufacturing cement, wood, and chemical kilns--are classified in U.S. Census Bureau NAICS-based industry 3332981, All Other Industrial Machinery Manufacturing, except Cotton Ginning Machinery and Parts;
• Manufacturing heating equipment (except electric and warm air)--are classified in U.S. Industry 333414, Heating Equipment (except Warm Air Furnaces) Manufacturing;
• Manufacturing cremating ovens--are classified in U.S. Census Bureau NAICS-based industry 3339991, All Other General Purpose Machinery Manufacturing, except Non-Automotive Screwjacks;
• Manufacturing laboratory furnaces and ovens--are classified in U.S. Census Bureau NAICS-based industry 3391114, Laboratory Furnaces and Ovens Manufacturing.