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HSChapter 73
U.S. exports of large-diameter riveted or similarly closed pipes & tubes, iron or steel (over 16 in.) (HS 730590) totaled $270K in July 2026.
Importers of Large-Diameter Riveted or Similarly Closed Pipes & Tubes, Iron or Steel (Over 16 In.) 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 Riveted or Similarly Closed Pipes & Tubes, Iron or Steel (Over 16 In.) imports of $136K in July 2026 ran 49% above the year-to-date monthly average of $91K.
Last updated: July 2026 dataRiveted and similarly closed large-diameter pipes represent a legacy fabrication method still used in certain civil engineering and water infrastructure applications, distinguished from welded products by their mechanical fastening technique. The two tariff lines under this heading — 7305901000 for iron or non-alloy steel and 7305905000 for alloy steel — reflect the alloy-content split standard across Chapter 73 pipe classifications. Canada is the primary supplier to the US under this heading, with China and Denmark also among the leading sources.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
23 shipments/mo
The critical factor is the closure method. If the pipe's seam is formed by riveting, bolting, or a similar mechanical fastening process rather than by any form of welding, it belongs under 730590. Welded pipes — regardless of seam orientation — fall under 730531 or 730539. Mill certifications and fabrication records are the primary supporting documents for this distinction.
Section 232 tariffs apply to iron and steel articles broadly, but the specific treatment for Canadian-origin steel products has been subject to separate bilateral arrangements. Importers should verify the current status of any Section 232 exemptions or alternative measures applicable to Canadian steel at the time of entry, as these arrangements have changed over time.
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.
Exports · July 2026
destination
Turkey and Dominican Republic together take 59% of it.
customs district
origin
entry
rate provision · imports
the effective duty rate is 42.46%.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7305901000 | Oth Tubes, Pipes NESOI Riveted Etc Nt Wld Ir/Nalst | $118K | 48.95% | 100.00% | $58K |
| 7305905000 | Oth Tubes, Pipes NESOI Riveted Etc Nt Wld Al | $18K | 0.00% | 100.00% | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7305901000 | Oth Tubes, Pipes NESOI Riveted Etc Nt Wld Ir/Nalst | $200K |
| 7305905000 | Oth Tubes, Pipes NESOI Riveted Etc Nt Wld Al | $70K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Subheading 7 of 7 in heading 7305
Subheading 730590 · $136K of $86.7M
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