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SITCSection 6
U.S. imports of welded iron & steel tubing with noncircular cross-section (SITC 67944) totaled $52.4M in April 2026, traded with 32 countries.
Importers of Welded Iron & Steel Tubing with Noncircular Cross-Section paid $25.7M in duties in April 2026 — an effective duty rate of 49% on $52.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Welded Iron & Steel Tubing with Noncircular Cross-Section imports of $52.4M in April 2026 ran 13% above the year-to-date monthly average of $46.3M.
Last updated: April 2026 dataWelded iron and steel tubes and pipes with noncircular cross-sections — square, rectangular, oval, or other profiles — occupy a distinct classification niche separate from round structural tubing. Imports of these profiles are subject to Section 232 tariffs, making origin and product specification critical variables in landed-cost calculations. Fabricators serving construction, automotive, and industrial equipment sectors rely on these shapes for structural frames and enclosures where round tube geometry is impractical.
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The noncircular designation specifically excludes round-profile welded pipe, which falls under separate SITC headings. Square, rectangular, oval, and other non-round welded profiles classify here, and the distinction matters because misclassification between round and noncircular can affect applicable duty rates and Section 232 exposure.
Yes. Welded iron and steel tubular products, including noncircular profiles, are broadly subject to Section 232 tariffs on steel imports. Antidumping and countervailing duty orders may also apply depending on the specific product specification and country of origin, so importers should verify current orders with CBP before entry.
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Monthly import values over time