Harmonized System
U.S. imports of Welded Circular Cross-Section Pipes, Tubes & Hollow Profiles, Iron or Non-Alloy Steel (HS 730630) totaled $80.2M in August 2026, imported from 37 countries.
Importers of Welded Circular Cross-Section Pipes, Tubes & Hollow Profiles, Iron or Non-Alloy Steel paid $39.0M in duties in August 2026, an average duty rate of 48.60% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Welded Circular Cross-Section Pipes, Tubes & Hollow Profiles, Iron or Non-Alloy Steel imports of $80.2M in August 2026 ran 16% above the year-to-date monthly average of $69.3M.
Last updated: August 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.
3.6K import shipments a month
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.
Trade Directory
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Subheading 1 of 10 in heading 7306
Subheading 730630 · $80.2M of $283.0M
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.
Imports · August 2026
origin
customs district
destination
entry
rate provision · imports
1.3% enters free of duty; duty collected equals 48.60% of imports for consumption.
ImportsExports
Imports
$80.2MYoY · free account
Exports
$40.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $811.2M of Welded Circular Cross-Section Pipes, Tubes & Hollow Profiles, Iron or Non-Alloy Steel and exported $441.3M.
Through August 2026. Source: U.S. Census Bureau.