U.S. imports of Seamless Iron or Nonalloy Steel Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled (HS 730439) totaled $8.5M in August 2026, imported from 28 countries.
Importers of Seamless Iron or Nonalloy Steel Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled paid $4.6M in duties in August 2026, an average duty rate of 50.53% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Seamless Iron or Nonalloy Steel Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled imports of $8.5M in August 2026 ran 14% below the year-to-date monthly average of $9.9M.
Last updated: August 2026 dataHot-finished seamless tubes of iron or nonalloy steel serve as workhorses across the oil and gas, construction, and industrial piping sectors, where dimensional precision requirements are less stringent than for cold-worked equivalents. These products are subject to Section 232 tariffs, and China — the leading supplier — has also faced antidumping and countervailing duty orders on certain circular welded and seamless pipe products, making correct classification and scope review essential before entry. The US tariff schedule is unusually granular here, subdividing lines by outer diameter (from under 38.1 mm through over 406.4 mm) and wall thickness, with separate provisions for boiler tubes and galvanized pipe. Italy and Germany are significant European sources alongside China and India.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
291 import shipments a month
The dimensional breakouts reflect both duty-rate differentiation and the practical need to align HTS lines with industry specifications such as ASTM A53 and A106 schedules. Outer diameter and wall thickness are objectively measurable at the port of entry, whereas end-use claims are harder to verify. Importers must declare the correct OD and wall thickness on entry documentation; misclassification between size brackets can trigger penalty exposure.
Yes. US trade remedy orders have historically covered certain seamless pipe and tube products from China. Importers should check the current scope of active antidumping and countervailing duty orders with CBP or a licensed customs broker before shipment, as scope rulings can extend to products that appear to fall outside the literal description of an order.
ImportsExports
Imports
$8.5MYoY · free account
Exports
$5.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $107.2M of Seamless Iron or Nonalloy Steel Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled and exported $56.7M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 730439 — Seamless Iron or Nonalloy Steel Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled, so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
Pipes, Smls, I/S, NESOI, Diam,190.5-285.8, Wal Lt12.7mm
Tube, Pipe, Smls, I/S, NESOI, Diam Gt 406.4, Wal Gt=19mm
Tube, Pipe, Profil, Smls, Irn/Stl, NESOI, Diam Lt 38.1mm
Tube, Pipe, Smls, I/S, NESOI, Diam Gt 406.4, Wal Lt 19mm
Tubs, Pipe, Holow Profil, Smls, Irn/Stl, Boil, Lt 38.1mm
Tubs, Pipe, Profil, Smls, Irn/Stl, Boil, Diam Gt 285.8mm
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7304390000 | Oth Ios Na Ps Tb Hlw Pfl Smls Cir Cs Nt Cld-Wrkd | $5.5M |
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 6 of 13 in heading 7304
Subheading 730439 · $8.5M of $182.5M
Imports · August 2026
origin
China pays 75.1% duty; Mexico 27.9%.
customs district
destination
entry
rate provision · imports
8.3% enters free of duty; duty collected equals 50.53% of imports for consumption.