U.S. imports of Seamless Alloy Steel (Non-Stainless) Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled (HS 730459) totaled $18.9M in August 2026, imported from 22 countries.
Importers of Seamless Alloy Steel (Non-Stainless) Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled paid $9.8M in duties in August 2026, an average duty rate of 51.84% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Seamless Alloy Steel (Non-Stainless) Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled imports of $18.9M in August 2026 ran 17% above the year-to-date monthly average of $16.2M.
Last updated: August 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.
462 import shipments a month
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.
Subheading 4 of 13 in heading 7304
Subheading 730459 · $18.9M of $182.5M
ImportsExports
Imports
$18.9MYoY · free account
Exports
$5.1MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $170.8M of Seamless Alloy Steel (Non-Stainless) Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled and exported $48.3M.
Through August 2026. Source: U.S. Census Bureau.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
Oth Tps, Sms, Asnss, Cs, Nes, Od190.5 Nov285.8 Wt19o Ov
Oth Tps, Sms, Asnss, Cs, Fblrs, Etc, Nhrs Od Ov 406.4 Mm
Oth Tps, Sms, Asnss, Cs, Nes, Odov285.8nov406.4, Wt19 Ao
Oth Tps, Sms, Asnss, Cs, Fblrs, Etcnhrsod38.1nov114.3mm
Oth Tps, Sms, Asnss, Cs, NESOI, Od38.1 Nov114.3wtov12.7
Oyh Tps; Smls; Asnss; Cs; Fblrs, Nhr Od Ov114.3nov190.5
Oth Tps, Sms, Asnss, Cs, Fblrs, Nhr Od Ov285.8 L406.4mm
Oth Tps, Sms, Asnss, Cs, NESOI, Odo285.8nov406.4wtu12.7
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 | $5.1M |
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.
Trade Directory
List your company under HS 730459 — Seamless Alloy Steel (Non-Stainless) Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled, so the companies trading it can find you. Be the first supplier listed.
Imports · August 2026
origin
China pays 74.1% duty; Italy 47.6%.
customs district
destination
entry
rate provision · imports
duty collected equals 51.84% of imports for consumption.