U.S. imports of Stainless Steel Pipe & Tube Fittings (Other) (HS 730729) totaled $47.8M in September 2026, imported from 57 countries.
Importers of Stainless Steel Pipe & Tube Fittings (Other) paid $27.2M in duties in September 2026, an average duty rate of 57.38% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Stainless Steel Pipe & Tube Fittings (Other) imports of $47.8M in September 2026 ran 31% above the year-to-date monthly average of $36.4M.
Last updated: September 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.
4.4K import shipments a month
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.
ImportsExports
Imports
$47.8MYoY · free account
Exports
—YoY · free account
12-mo low · imports
Low · free accountOver the twelve months to September 2026, the U.S. imported $420.7M of Stainless Steel Pipe & Tube Fittings (Other).
Through September 2026 · exports 11 of 12 months reported. Source: U.S. Census Bureau.
Imports · September 2026
origin
China and Taiwan together supply 45% of it. China pays 79.2% duty; Canada 25.5%.
customs district
destination
entry
rate provision · imports
1.5% enters free of duty; duty collected equals 57.38% of imports for consumption.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 7307290090 | Oth Tube and Pipe Fittings, Stainless Steel, NESOI | $40.3M | 55.65% | 97.72% | $22.4M |
| 7307290030 | Nipples, Pipe and Tube, of Stainless Steel | $1.5M | 60.58% | 100.00% | $929K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7307290000 | Stainless Steel Tube or Pipe Fittings NESOI | $40.8M |
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 2 of 10 in heading 7307
Subheading 730729 · $47.8M of $280.0M
Trade Directory
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