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Subheading 2 of 13 in heading 7304
Subheading 730459 · $24.3M of $164.4M
U.S. imports of seamless alloy steel (non-stainless) circular tubes & pipes, not cold-drawn or cold-rolled (HS 730459) totaled $24.3M in July 2026, traded with 22 countries.
Importers of Seamless Alloy Steel (Non-Stainless) Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled paid $11.9M in duties in July 2026 — an effective duty rate of 49% on $24.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Seamless Alloy Steel (Non-Stainless) Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled imports of $24.3M in July 2026 ran 54% above the year-to-date monthly average of $15.8M.
Last updated: July 2026 dataHot-finished seamless tubes of non-stainless alloy steel are a primary input for oil-country tubular goods (OCTG), high-pressure boiler circuits, and structural applications in energy infrastructure, where large outer diameters and heavy walls preclude cold-working. Mexico leads US import supply under this heading, in part because of integrated steel and tube-rolling capacity serving North American energy markets, with China and Germany also significant sources. The US schedule is exceptionally detailed, subdividing lines by outer diameter across seven size brackets (from under 38.1 mm to over 406.4 mm) and by wall thickness, with separate provisions for heat-resistant steel and boiler-service tubes. Section 232 tariffs apply, and importers should check whether antidumping or countervailing duty orders on OCTG or alloy pipe from China or other origins cover the specific grade and dimensions.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
543 shipments/mo
Active antidumping and countervailing duty orders on oil-country tubular goods from China and other countries may cover certain alloy steel seamless pipes that classify under 730459. The scope of OCTG orders is defined by end-use (casing, tubing, drill pipe for oil and gas wells) and physical specifications, not solely by HTS code. Importers must conduct a scope analysis — and potentially request a scope ruling from the Department of Commerce — to determine whether their specific product and origin combination is covered, even if the HTS classification appears to fall outside the order's primary code.
The granular size breakouts reflect historical trade remedy petitions and duty-rate differentiation tied to specific product dimensions that were the subject of antidumping investigations. Each bracket corresponds to a distinct commercial product range with different end uses and competitive dynamics. Importers must measure and declare OD and wall thickness accurately; even a small measurement error that shifts a product into a different bracket can change the applicable duty rate or trade remedy exposure.
HSChapter 73
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.
| Code | Description | Export Value |
|---|---|---|
| 7304590000 | Oth Tb Ps Hp Aly Stl Nt Ss Smls Circ Cs Nt Cld-Wrk | $2.9M |
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.
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ImportsExports
Imports
$24.3MYoY · Pro
Exports
$2.9MYoY · 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
0.7% enters free of duty; the effective duty rate is 48.83%.