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HSChapter 73
U.S. imports of welded circular cross-section pipes, tubes & hollow profiles, stainless steel (HS 730640) totaled $38.1M in April 2026, traded with 32 countries.
Importers of Welded Circular Cross-Section Pipes, Tubes & Hollow Profiles, Stainless Steel paid $18.0M in duties in April 2026 — an effective duty rate of 48% on $37.6M in dutiable value, based on actual customs collections rather than the published tariff schedule. Welded Circular Cross-Section Pipes, Tubes & Hollow Profiles, Stainless Steel imports of $38.1M in April 2026 ran 12% above the year-to-date monthly average of $33.9M.
Last updated: April 2026 dataWelded stainless steel circular tubes and hollow profiles — used extensively in food processing, pharmaceutical, chemical, and architectural applications — are classified under a heading that subdivides by wall thickness, outside diameter, and nickel content. The nickel-content thresholds (notably the 0.5% and 24% Ni breakpoints) reflect the commercial distinction between ferritic/martensitic grades and austenitic grades such as 304 and 316, which command different pricing and duty treatment. India and Taiwan are the leading suppliers to the US under this heading, with Canada, South Korea, and Mexico also among the top sources.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Several 10-digit lines within 730640 are differentiated by nickel content — specifically whether the steel contains over 0.5% nickel and whether it falls below or above 24% nickel. These thresholds correspond broadly to austenitic grades (higher nickel, e.g., 304/316) versus ferritic or martensitic grades (lower nickel). The mill test report's certified chemical composition is the authoritative document for determining the correct line, and misclassification between nickel-content brackets is a common audit finding.
India is the leading supplier of welded stainless steel tubes to the US under this heading. Importers should check whether any antidumping or countervailing duty orders on welded stainless steel pipe or tube from India are active and whether the specific product — by grade, wall thickness, and outside diameter — falls within the scope of such orders. Section 232 tariffs on steel apply broadly, but AD/CVD exposure is product- and order-specific and should be verified before entry.
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $2.9M | $7.4M | +$4.6M |
| CANADA | $6.4M | $3.5M | -$2.9M |
| TAIWAN | $8.5M | $63K | -$8.4M |
| KOREA, SOUTH | $5.4M | $2.3M | -$3.1M |
| INDIA | $6.5M | $395K | -$6.1M |
Supplier Network
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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 |
|---|---|---|---|---|
| 7306405085 | TUBES WLD CCS SS OD 114.3-406.4MM OV 0.5 LT 24% NI | $7.9M | 48.14% | $3.8M |
| 7306405040 | TUBES WLD CCS SS 1.65MM OM CR OV 0.5 BUT LT 24% NI | $7.2M | 42.51% | $3.0M |
| 7306401015 | OTH SS P/T/HP WD CCS WL UN 1.65 OV .5% NCKL NESOI | $6.0M | 49.57% | $3.0M |
| 7306405064 | TUBES WD CS SS WLS OV1.65 OD NO114.3 0.5 LT 24% NI | $5.8M | 49.09% | $2.8M |
| 7306405090 | TUBES WLD CCS SS OD 114.3-406.4MM NOV 0.5% NICKEL | $4.2M | 54.19% | $2.2M |
| 7306401090 | OTH TUBES WLD CCS SS WLS LT 1.65MM TH NOV 0.5% NI | $3.3M | 50.24% | $1.6M |
| 7306405062 | OTH SS T/P/HP CCS WL 1.65 AO THK OD NOV 114.3 ETC | $1.8M | 50.49% | $931K |
| 7306401010 | OTH SS P/T/HP WD CIRC WL UN 1.65MM OV .5% NCKL ETC | $582K | 44.75% | $234K |
| 7306405005 | TUBES ETC WLD CIRC CS HI-NI STAINLS STL 1.65MMOM | $404K | 0.89% | $2K |
| 7306405015 | TUBES ETC NES WLD CIRC STNLS STL 1.65MMOM FR BOILR | $348K | 55.89% | $183K |
| 7306405044 | OTH SS T/P/HP CR CIRC CS WLL 1.65MM AO THCK NESOI | $319K | 28.41% | $90K |
| 7306405080 | TUBES WD CS SS WLS OV 1.65 OD NO114.3 NOV 0.5% NI | $227K | 45.92% | $99K |
| 7306405042 | OTH SS P/T/HP CR CRC CS WLL 1.65MM AO UN 15% CHROM | $7K | 50.01% | $4K |
TUBES WLD CCS SS OD 114.3-406.4MM OV 0.5 LT 24% NI
TUBES WLD CCS SS 1.65MM OM CR OV 0.5 BUT LT 24% NI
OTH SS P/T/HP WD CCS WL UN 1.65 OV .5% NCKL NESOI
TUBES WD CS SS WLS OV1.65 OD NO114.3 0.5 LT 24% NI
TUBES WLD CCS SS OD 114.3-406.4MM NOV 0.5% NICKEL
OTH TUBES WLD CCS SS WLS LT 1.65MM TH NOV 0.5% NI
OTH SS T/P/HP CCS WL 1.65 AO THK OD NOV 114.3 ETC
OTH SS P/T/HP WD CIRC WL UN 1.65MM OV .5% NCKL ETC
TUBES ETC WLD CIRC CS HI-NI STAINLS STL 1.65MMOM
TUBES ETC NES WLD CIRC STNLS STL 1.65MMOM FR BOILR
OTH SS T/P/HP CR CIRC CS WLL 1.65MM AO THCK NESOI
TUBES WD CS SS WLS OV 1.65 OD NO114.3 NOV 0.5% NI
OTH SS P/T/HP CR CRC CS WLL 1.65MM AO UN 15% CHROM
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7306405000 | OTH PS TB HPFLS WLD CIRC CS SSTL WLLS 1.65MM AO TH | $10.2M |
| 7306401000 | OTH TUBES ETC WLD CIRCS STNLS STL WLS LT 1.65MM TH | $8.7M |
OTH PS TB HPFLS WLD CIRC CS SSTL WLLS 1.65MM AO TH
1.3M kg
OTH TUBES ETC WLD CIRCS STNLS STL WLS LT 1.65MM TH
517.8K kg
TABLE, KITCHEN ETC ARTICLES & PTS, STAINLESS STEEL
HS 732393
| State | Imports | Exports | Balance |
|---|---|---|---|
| Texas | $10.2M | $2.8M | -$7.3M |
| California | $6.5M | $5.6M | -$972K |
| Indiana | $2.0M | $1.2M | -$806K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $9.3M | $437K | -$8.9M |
| LAREDO, TX | $3.2M | $4.0M | +$733K |
| LOS ANGELES, CA | $6.3M | -- | -$6.3M |