SITCSection 6
U.S. exports of large-diameter non-seamless iron & steel tubes & pipes (nes, od over 406.4 mm) (SITC 67939) totaled $270K in July 2026.
Importers of Large-Diameter Non-Seamless Iron & Steel Tubes & Pipes (NES, OD Over 406.4 mm) paid $58K in duties in July 2026 — an effective duty rate of 42% on $136K in dutiable value, based on actual customs collections rather than the published tariff schedule. Large-Diameter Non-Seamless Iron & Steel Tubes & Pipes (NES, OD Over 406.4 mm) imports of $136K in July 2026 ran 49% above the year-to-date monthly average of $91K.
Basic heading 67939 · $136K of $26.7B
Covering iron and steel tubes and pipes produced by methods other than seamless or conventional welding — such as riveting or spiral forming — with an external diameter exceeding 406.4 mm, this residual subheading captures specialty fabrication methods used in older infrastructure and certain civil engineering applications. The 'other than seamless' scope is broad, encompassing riveted, spiral-welded, and other non-standard joining techniques, which can complicate classification when production records are incomplete. As with other large-diameter steel products, Section 232 tariff measures apply, and importers should document the manufacturing process clearly.
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23 shipments/mo
The category encompasses riveted, spiral-welded (helical seam), and other non-standard joining methods that do not qualify as seamless but may also not meet the definition of conventional longitudinal electric-resistance or submerged-arc welded pipe. Production records identifying the seam type and joining method are essential for accurate classification.
Spiral-welded (helical seam) pipe is formed by coiling a steel strip at an angle and welding along the helical seam, while longitudinally welded pipe has a single straight seam running the length of the pipe. Both are 'other than seamless,' but their dimensional capabilities and typical end-uses differ. Classification between the welded NES subheadings (67933 vs. 67939) depends on whether the product meets the specific welded-pipe definition or falls into the broader residual.
Supplier Network
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Exports · July 2026
destination
Turkey and Dominican Republic together take 59% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$136KYoY · Pro
Exports
$270KYoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.