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HSChapter 73
U.S. imports of stainless steel pipe & tube fittings (other) (HS 730729) totaled $31.4M in April 2026, traded with 47 countries.
Importers of Stainless Steel Pipe & Tube Fittings (Other) paid $15.8M in duties in April 2026 — an effective duty rate of 53% on $29.6M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataResidual stainless steel pipe fittings — including nipples (7307290030) and all other stainless fittings not captured by flanges, threaded elbows, or butt-weld categories — serve a broad range of industrial, commercial, and sanitary piping applications. China and Taiwan are the leading suppliers, with Germany a notable source for precision or specialty grades. The heading's catch-all nature means classification disputes are common: importers must confirm that a fitting does not belong in a more specific stainless subheading (730721–730723) before defaulting to 730729. Section 232 tariffs and potentially applicable AD/CVD orders on stainless fittings from China require verification at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Flanges are frequently entered under 730729 when they should be in 730721; threaded elbows and couplings belong in 730722; and butt-weld fittings belong in 730723. 730729 is a true residual — it should only be used after confirming the fitting does not meet the description of any of the three preceding stainless subheadings. Pipe nipples (short threaded pipe lengths) are a legitimate 730729 article, classified at 7307290030.
CBP generally treats pipe nipples as fittings (730729) rather than pipe, based on their function as connectors between two pipe ends. Key indicators include short length relative to diameter, threading on both ends, and commercial sale as a fitting component. Very long nipples (sometimes called 'close nipples' or 'long nipples') can blur this line; when length-to-diameter ratios approach those of standard pipe, a binding ruling is advisable.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $6.9M | $2.5M | -$4.4M |
| MEXICO | $2.2M | $7.2M | +$5.1M |
| CANADA | $2.3M | $5.8M | +$3.5M |
| GERMANY | $3.2M | $1.9M | -$1.3M |
| KOREA, SOUTH | $3.1M | $1.4M | -$1.7M |
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 |
|---|---|---|---|---|
| 7307290090 | OTH TUBE AND PIPE FITTINGS, STAINLESS STEEL, NESOI | $30.0M | 53.10% | $15.0M |
| 7307290030 | NIPPLES, PIPE AND TUBE, OF STAINLESS STEEL | $1.3M | 61.74% | $817K |
OTH TUBE AND PIPE FITTINGS, STAINLESS STEEL, NESOI
NIPPLES, PIPE AND TUBE, OF STAINLESS STEEL
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7307290000 | STAINLESS STEEL TUBE OR PIPE FITTINGS NESOI | $39.5M |
STAINLESS STEEL TUBE OR PIPE FITTINGS NESOI
376.1K 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 | $6.3M | $4.9M | -$1.4M |
| California | $3.5M | $6.5M | +$3.0M |
| Ohio | $1.1M | $7.5M | +$6.4M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHICAGO, IL | $1.5M | $4.6M | +$3.1M |
| CLEVELAND, OH | $1.8M | $3.5M | +$1.7M |
| NEW ORLEANS, LA | $717K | $3.7M | +$3.0M |