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HSChapter 73
U.S. imports of welded circular cross-section pipes, tubes & hollow profiles, iron or non-alloy steel (HS 730630) totaled $69.7M in July 2026, traded with 36 countries.
Importers of Welded Circular Cross-Section Pipes, Tubes & Hollow Profiles, Iron or Non-Alloy Steel paid $33.6M in duties in July 2026 — an effective duty rate of 49% on $68.8M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: July 2026 dataWelded circular pipes, tubes, and hollow profiles of iron or non-alloy steel — excluding line pipe and OCTG — serve the widest range of end uses in construction, mechanical, and fluid-conveyance applications, making this one of the most heavily subdivided headings in Chapter 73. The US schedule breaks the heading across wall thickness (below and above 1.65 mm), outside diameter ranges, galvanizing status, and coupling/lining configurations, resulting in more than twenty active 10-digit tariff lines. Mexico and the United Arab Emirates lead US imports under this heading, with Canada, Vietnam, and India also among the top sources. Section 232 tariffs apply, and imports from certain origins may also face antidumping or countervailing duty exposure.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
3.3K shipments/mo
The 1.65 mm wall thickness is the primary structural breakpoint within the heading: lines 7306301000 series cover tubes with walls less than 1.65 mm, while the 7306305000 series and related lines cover walls of 1.65 mm or more. Because the wall thickness also interacts with outside diameter ranges and surface treatment (galvanized vs. non-galvanized), importers should obtain dimensional certifications from the mill to ensure the correct 10-digit line is selected.
Tariff line 7306301010 specifically covers tubes internally coated with non-electrically insulating material for use as electrical conduit — a product defined by its functional coating and end-use rather than purely by dimensions. This end-use specificity means that identical-dimension tubes without the qualifying internal coating would fall under the residual thin-wall line 7306301090, so coating specifications and intended use documentation are important for correct classification.
ImportsExports
Imports
$69.7MYoY · Pro
Exports
$40.4MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
customs district
destination
entry
rate provision · imports
1.3% enters free of duty; the effective duty rate is 48.24%.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
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 2 of 10 in heading 7306
Subheading 730630 · $69.7M of $317.1M
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