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SITCSection 7
U.S. imports of induction or dielectric industrial & laboratory furnaces and ovens (SITC 74132) totaled $8.8M in July 2026, traded with 28 countries.
Importers of Induction or Dielectric Industrial & Laboratory Furnaces and Ovens paid $902K in duties in July 2026 — an effective duty rate of 19% on $4.8M in dutiable value, based on actual customs collections rather than the published tariff schedule. Induction or Dielectric Industrial & Laboratory Furnaces and Ovens imports of $8.8M in July 2026 ran 20% above the year-to-date monthly average of $7.3M.
Basic heading 428 of 642 in section 7
Basic heading 74132 · $8.8M of $175.6B
Induction furnaces use electromagnetic fields to heat electrically conductive workpieces directly, while dielectric ovens heat non-conductive materials through high-frequency electric fields—two distinct technologies grouped here because both achieve contactless, volumetric heating. Induction melting and hardening furnaces are indispensable in steel foundries, automotive component manufacturing, and precious-metal refining, where rapid, localized heating improves metallurgical outcomes. Dielectric equipment, including radio-frequency dryers, serves the wood-products, plastics, and food-processing industries. Section 301 measures may apply to units of Chinese origin, and importers should verify the applicable subheading before sourcing decisions.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
116 shipments/mo
Multi-mode furnaces are classified according to their principal heating function. If induction heating is the primary operating mode and resistance elements serve only as auxiliary or standby heat, the unit would generally be classified here. When the functions are genuinely equal, the heading that appears last in the tariff schedule may apply, but a CBP binding ruling is the safest path for hybrid equipment.
Dielectric and radio-frequency heating equipment operates at frequencies regulated by the FCC in the United States. Imported units must comply with FCC Part 18 industrial, scientific, and medical (ISM) equipment rules, which set limits on radio-frequency emissions. Importers should obtain FCC compliance documentation from the manufacturer before entry to avoid detention or required modification at the port.
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Imports · July 2026
origin
Germany and China together supply 75% of it.
customs district
Census does not publish district detail for this classification system.
destination
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$8.8MYoY · Pro
Exports
$3.6MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.