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HSChapter 73
U.S. imports of seamless stainless steel circular tubes & pipes, not cold-drawn or cold-rolled (HS 730449) totaled $6.9M in April 2026, traded with 23 countries.
Importers of Seamless Stainless Steel Circular Tubes & Pipes, Not Cold-Drawn or Cold-Rolled paid $3.5M in duties in April 2026 — an effective duty rate of 51% on $6.9M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataHot-finished seamless stainless steel tubes — produced without a final cold-reduction pass — are widely used in heat exchangers, petrochemical reactors, and power-generation equipment where large diameters or heavy wall sections make cold-working impractical. Japan and France are the leading suppliers under this heading, reflecting the concentration of specialty stainless melting and tube-rolling capacity in those countries. The US schedule separates hollow bars (7304490010 and 7304490015) from tubes and pipes, and further distinguishes boiler-service tubes (7304490045) from general-purpose tubes (7304490060), with high-nickel grades enumerated separately at 7304490005. Section 232 tariffs apply, and importers should verify whether active antidumping orders on stainless steel pipe from specific origins cover the grade and dimensions being imported.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Hollow bars of stainless steel with a circular cross-section that are seamless and not cold-worked fall under 7304490010 or 7304490015 within heading 730449. The key classification boundary is whether the product is a hollow bar (solid-wall stock intended for machining) versus a tube or pipe (intended to convey fluids or gases). CBP has issued binding rulings on this distinction; importers with ambiguous products should seek a ruling before entry.
Both countries host integrated specialty steel producers with electric arc furnace and vacuum-degassing capacity suited to high-alloy stainless grades, combined with large-diameter seamless rolling mills. These capital-intensive assets are concentrated in relatively few global locations, which is why European and Japanese mills remain primary sources for heavy-wall and large-diameter stainless tube even as lower-grade stainless production has shifted to Asia.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7304490060 | TUBES PIPES ETC SS CIRC CS NT HLW BRS NT FR BOILRS | $3.8M | 51.17% | $2.0M |
| 7304490015 | HOLLOW BRS SS SMLS CIRC CS NOT COLD-DRAWN, NESOI | $2.2M | 49.50% | $1.1M |
| 7304490045 | TUBES PIPES ETC SS CIRC CS NT HLW BARS FOR BOILERS | $778K | 51.25% | $399K |
| 7304490005 | TUBES PIPES ETC SMLS CIRC CS HI-NI SS NOT COLD-RLD | $20K | 50.00% | $10K |
TUBES PIPES ETC SS CIRC CS NT HLW BRS NT FR BOILRS
HOLLOW BRS SS SMLS CIRC CS NOT COLD-DRAWN, NESOI
TUBES PIPES ETC SS CIRC CS NT HLW BARS FOR BOILERS
TUBES PIPES ETC SMLS CIRC CS HI-NI SS NOT COLD-RLD
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7304490040 | OTH SS TB PS HP SMLS CIRC CS NT COLD-WRKD NT HLW B | $2.2M |
| 7304490010 | HOLLOW BARS, STNLS STL, SMLS, CIRC CS NES NT C-RLD | $118K |
OTH SS TB PS HP SMLS CIRC CS NT COLD-WRKD NT HLW B
106.2K kg
HOLLOW BARS, STNLS STL, SMLS, CIRC CS NES NT C-RLD
5.2K kg
ARTICLES OF IRON OR STEEL NESOI
HS 732690
STRUCTURES AND PARTS NESOI OF IRON OR STEEL
HS 730890
THREADED SCREWS AND BOLTS NESOI OF IRON OR STEEL
HS 731815
COOKING APPLIANCES ETC FOR GAS FUEL, IRON OR STEEL
HS 732111
NUTS OF IRON OR STEEL
HS 731816
TABLE, KITCHEN ETC ARTICLES & PTS, STAINLESS STEEL
HS 732393
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $4.8M | $125K | -$4.7M |
| NEWARK, NJ | $630K | $56K | -$575K |
| LONG BEACH, CA | $489K | -- | -$489K |