North American Industry Classification System
U.S. imports of Iron, Steel & Ferroalloy Steel Products (Six-Digit) (NAICS 331110) totaled $2.4B in August 2026, imported from 88 countries.
Importers of Iron, Steel & Ferroalloy Steel Products (Six-Digit) paid $762.3M in duties in August 2026, an average duty rate of 31.27% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Iron, Steel & Ferroalloy Steel Products (Six-Digit) imports of $2.4B in August 2026 ran 12% above the year-to-date monthly average of $2.1B.
Last updated: August 2026 dataAt the most granular NAICS level within this sector, NAICS 331110 captures the full integrated production cycle — from raw iron ore reduction and ferroalloy smelting through the casting of semi-finished steel shapes — within a single classification unit. Facilities coded here typically operate blast furnaces, basic oxygen furnaces, or electric arc furnaces and represent the capital-intensive core of domestic steelmaking capacity. For trade professionals, this code is the NAICS anchor most frequently referenced in Section 232 product exclusion petitions and domestic industry injury analyses before the International Trade Commission. Accurate mapping between this NAICS code and the corresponding HTS chapters is essential for antidumping and countervailing duty scope determinations.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
44.0K import shipments a month
The International Trade Commission uses NAICS 331110 to define the domestic like-product industry when evaluating injury petitions for steel products. Petitioners must demonstrate that domestic producers classified under this code compete directly with the imported merchandise under investigation, making precise NAICS-to-HTS crosswalks a critical part of petition preparation.
Yes. NAICS 331110 encompasses both integrated blast furnace/basic oxygen furnace mills that process iron ore and scrap-based electric arc furnace (EAF) mini-mills. The distinction matters commercially — EAF mills have lower capital costs and faster ramp times — but both production routes fall within the same six-digit classification.
National industry 1 of 1 in naics industry 33111
National industry 331110 · $2.4B of $2.4B
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Imports · August 2026
origin
South Korea pays 42.1% duty; India 13.4%.
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 3311 for those.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$2.4BYoY · free account
Exports
$1.2BYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $24.6B of Iron, Steel & Ferroalloy Steel Products (Six-Digit) and exported $13.2B.
Through August 2026. Source: U.S. Census Bureau.