U.S. imports of Industrial Furnaces & Ovens (NAICS 333994) totaled $113.2M in August 2026, imported from 66 countries.
Importers of Industrial Furnaces & Ovens paid $8.3M in duties in August 2026, an average duty rate of 7.70% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Industrial Furnaces & Ovens imports of $113.2M in August 2026 ran 27% above the year-to-date monthly average of $89.0M.
Last updated: August 2026 dataIndustrial furnaces and ovens — including heat-treatment, annealing, sintering, and calcining equipment — serve as foundational capital goods in metals, ceramics, glass, and advanced-materials manufacturing. NAICS 333994 captures both fuel-fired and electric resistance designs, a distinction that matters for HTS classification under chapter 84 and for energy-efficiency compliance requirements in certain destination markets. Equipment sourced from major producing countries may be subject to antidumping or Section 301 measures depending on origin and specific subheading, making pre-import classification review advisable for high-value units.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.9K import shipments a month
Yes. HTS chapter 84 distinguishes between electric industrial furnaces and ovens and those using other heat sources such as gas or oil. Correct identification of the heating method is essential for accurate tariff classification and to determine whether Section 301 or other trade-remedy measures apply.
Large furnaces often ship in multiple pieces under a single commercial invoice. Importers should provide a detailed packing list, assembly drawings, and a bill of materials to support classification of the unit as a complete machine. A binding ruling from CBP can prevent reclassification of individual components at higher duty rates.
National industry 7 of 7 in naics industry 33399
National industry 333994 · $113.2M of $4.1B
ImportsExports
Imports
$113.2MYoY · free account
Exports
$80.6MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $989.7M of Industrial Furnaces & Ovens and exported $1.0B.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Italy pays 11.0% duty; Sweden 0.5%.
customs district
Census does not publish district detail for this classification system.
destination
Census publishes state breakdowns for NAICS to the 4-digit level only. See NAICS 3339 for those.
entry
Census does not publish port detail for this classification system.
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