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NAICSSector 33
U.S. imports of sheet metal works (NAICS 332322) totaled $10.2M in July 2026, traded with 45 countries.
Importers of Sheet Metal Works paid $3.8M in duties in July 2026 — an effective duty rate of 39% on $9.8M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataFormed, stamped, and fabricated sheet metal products — including HVAC ductwork, enclosures, brackets, and custom panels — are a broadly traded category serving construction, mechanical systems, and equipment manufacturing. The gauge, alloy, and forming method (roll-formed vs. stamped vs. brake-formed) are the primary variables that determine both HTS classification and end-use suitability. Section 232 tariff exposure on steel and aluminum sheet inputs, combined in some cases with Section 301 exposure on finished articles from China, makes origin and material sourcing a layered cost consideration.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
567 shipments/mo
Sheet metal HVAC ductwork is generally classified under HTS Chapter 73 as articles of iron or steel, or Chapter 76 for aluminum ductwork. Certain steel ductwork from specific countries may fall within the scope of antidumping or countervailing duty orders, and Section 232 tariffs on steel and aluminum inputs add a further cost layer. Classification and remedy scope should be confirmed for each specific product and origin.
The forming method itself does not change HTS classification — the determinative factors are the base metal, the article's shape and function, and whether it is a finished article or a semi-finished intermediate. However, roll-formed profiles that resemble extrusions may raise questions about whether they fall under extrusion-specific trade-remedy orders, making a scope analysis advisable.
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National industry 3 of 3 in naics industry 33232
National industry 332322 · $10.2M of $200.1M
Imports · July 2026
origin
Canada and China together supply 77% of it.
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 3323 for those.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$10.2MYoY · Pro
Exports
$10.5MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.