U.S. imports of Parts for Nonelectric Industrial or Laboratory Furnaces and Ovens (SITC 74139) totaled $9.9M in August 2026, imported from 48 countries.
Importers of Parts for Nonelectric Industrial or Laboratory Furnaces and Ovens paid $1.7M in duties in August 2026, an average duty rate of 17.26% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Parts for Nonelectric Industrial or Laboratory Furnaces and Ovens imports of $9.9M in August 2026 ran 26% below the year-to-date monthly average of $13.5M.
Last updated: August 2026 dataReplacement and component parts for nonelectric industrial and laboratory furnaces and ovens occupy a specialized niche in the capital equipment supply chain, serving sectors from metals processing and ceramics to chemical manufacturing. Classification hinges on whether a part is dedicated to a specific furnace type or is a general-purpose component, a distinction that customs examiners scrutinize closely. Importers should document the parent equipment's fuel type and application to support the correct SITC heading assignment and avoid reclassification into broader machinery parts categories.
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319 import shipments a month
The key test is specificity: parts designed or adapted exclusively for nonelectric industrial or laboratory furnaces and ovens fall under this heading, while general-purpose fasteners, seals, or structural elements that serve multiple equipment types typically classify elsewhere. Maintaining technical documentation linking the part to a specific furnace model strengthens the classification position.
Yes. The parent furnace's energy source (gas-fired, oil-fired, or other nonelectric) is relevant to confirming the correct heading. Parts for electric furnaces fall under a separate SITC category, so importers should specify the furnace's operating principle in commercial invoices and entry documentation.
Basic heading 411 of 642 in section 7
Basic heading 74139 · $9.9M of $172.0B
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Imports · August 2026
origin
China pays 39.9% duty; United Kingdom 4.9%.
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
$9.9MYoY · free account
Exports
$10.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $163.6M of Parts for Nonelectric Industrial or Laboratory Furnaces and Ovens.
Through August 2026 · exports 10 of 12 months reported. Source: U.S. Census Bureau.