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HSChapter 73
U.S. imports of seamless alloy steel (non-stainless) circular tubes & pipes, cold-drawn or cold-rolled (HS 730451) totaled $2.0M in April 2026, traded with 17 countries.
Importers of Seamless Alloy Steel (Non-Stainless) Circular Tubes & Pipes, Cold-Drawn or Cold-Rolled paid $914K in duties in April 2026 — an effective duty rate of 48% on $1.9M in dutiable value, based on actual customs collections rather than the published tariff schedule. Seamless Alloy Steel (Non-Stainless) Circular Tubes & Pipes, Cold-Drawn or Cold-Rolled imports of $2.0M in April 2026 ran 29% below the year-to-date monthly average of $2.8M.
Last updated: April 2026 dataCold-drawn and cold-rolled seamless tubes of alloy steel other than stainless are critical inputs for bearing races, precision hydraulic cylinders, and high-temperature boiler circuits, where alloying elements such as chromium, molybdenum, and vanadium provide elevated strength and creep resistance. Germany leads supply under this heading, reflecting that country's deep integration with European automotive and industrial machinery supply chains that demand tight-tolerance alloy tube. The US schedule carves out bearing-quality tube (7304511000), high-nickel alloy grades (7304515005), heat-resistant steel boiler tubes (7304515015), and other boiler-service tubes (7304515045) from the general NESOI line (7304515060). All entries are subject to Section 232 tariffs, and importers of chromium-molybdenum grades should confirm whether any antidumping orders on alloy pipe from China or other origins apply.
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Bearing-quality tube is produced to tighter chemical composition, cleanliness, and dimensional tolerances — typically per standards such as ASTM A295 or equivalent — specifically for manufacture of anti-friction bearing rings. CBP expects importers to document the intended use and applicable material standard; a general-purpose alloy tube that happens to be the right size does not automatically qualify for the bearing-quality subheading.
Each line item must be classified separately based on the steel's composition and the applicable HTS subheading. Heat-resistant steel grades (7304515015) are defined by specific alloy content thresholds in the HTS schedule notes. Mixed shipments should be accompanied by mill test reports for each coil or bundle so that CBP can verify the correct subheading at entry; commingling without segregated documentation is a common audit trigger.
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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 |
|---|---|---|---|---|
| 7304515060 | TUBES ETC SMLS CIRC ALY STL NT SS CR NT FR BLRS ET | $1.4M | 47.84% | $665K |
| 7304515015 | TUBES ETC SMLS CIRC CS HEAT RESIS ST NES CR FR BLR | $318K | 58.35% | $178K |
| 7304511000 | TUBES ETC SMLS CIRC ALY NT STNL C-R FR BAL BEARNGS | $149K | 37.90% | $33K |
| 7304515045 | TUBES ETC SMLS CIRC CS CR FR BOILRS NT HT RESIS ST | $57K | 50.00% | $28K |
| 7304515005 | TUBES ETC SMLS CIRC CS HI-NI ALY STL NES CLD-ROLLD | $48K | 20.62% | $10K |
TUBES ETC SMLS CIRC ALY STL NT SS CR NT FR BLRS ET
TUBES ETC SMLS CIRC CS HEAT RESIS ST NES CR FR BLR
TUBES ETC SMLS CIRC ALY NT STNL C-R FR BAL BEARNGS
TUBES ETC SMLS CIRC CS CR FR BOILRS NT HT RESIS ST
TUBES ETC SMLS CIRC CS HI-NI ALY STL NES CLD-ROLLD
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7304510000 | OTH TB PS HLW PFL ALY STL NT SS SMLS CIRC CS CD-WK | $2.6M |
OTH TB PS HLW PFL ALY STL NT SS SMLS CIRC CS CD-WK
369.2K 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
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $736K | $551K | -$184K |
| Pennsylvania | $13K | $526K | +$514K |
| Michigan | $73K | $418K | +$345K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $706K | $173K | -$533K |
| NORFOLK-NEWPORT NEWS, VA | $702K | -- | -$702K |
| HILDAGO, TX | -- | $356K | +$356K |