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HSChapter 73
U.S. imports of stainless steel butt welding pipe & tube fittings (HS 730723) totaled $17.0M in April 2026, traded with 32 countries.
Importers of Stainless Steel Butt Welding Pipe & Tube Fittings paid $9.0M in duties in April 2026 — an effective duty rate of 55% on $16.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataButt welding fittings — elbows, tees, reducers, and caps joined by fusion welding rather than threads or mechanical means — are the standard connection method for high-pressure, high-temperature, and high-purity stainless steel piping in petrochemical, power generation, and semiconductor fabrication. The US schedule distinguishes fittings that have not been machined or tooled (7307230030) from all other butt welding fittings (7307230090). South Korea leads US supply under this heading, with Malaysia and Taiwan also prominent. Antidumping and countervailing duty orders on stainless steel butt-weld pipe fittings from certain countries have been in force for many years; scope verification is essential before entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
ASME B16.9 and ASTM A403 are the primary US standards for wrought stainless butt-weld fittings. While conformance to these standards does not itself determine HTS classification, specification documents citing these standards help establish that the product is a butt welding fitting (730723) rather than a cast fitting (730719) or a threaded fitting (730722). Material test reports and dimensional certifications are standard entry documentation.
The two active 10-digit lines under 730723 separate fittings in a rough or as-formed state (7307230030) from finished fittings (7307230090). In practice, most commercially traded butt-weld fittings are finish-machined to dimensional standards and therefore enter under 7307230090. The distinction matters primarily when fittings are imported in a semi-finished state for further processing in the US.
Monthly import values over time
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| MALAYSIA | $3.8M | $2.3M | -$1.5M |
| CHINA | $1.7M | $1.8M | +$182K |
| TAIWAN | $2.9M | $240K | -$2.6M |
| KOREA, SOUTH | $2.2M | $410K | -$1.8M |
| TURKEY | $2.2M | -- | -$2.2M |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7307230090 | SS TUBE OR PIPE BUTT WELDING FITTINGS, NESOI | $16.8M | 55.44% | $8.9M |
| 7307230030 | SS TUBE/PIPE BUTT WELDING FITNGS NT MCHNED/TOOLED | $201K | 57.16% | $115K |
SS TUBE OR PIPE BUTT WELDING FITTINGS, NESOI
SS TUBE/PIPE BUTT WELDING FITNGS NT MCHNED/TOOLED
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7307230000 | STAINLESS STEEL TUBE OR PIPE BUTT WELDING FITTINGS | $8.9M |
STAINLESS STEEL TUBE OR PIPE BUTT WELDING FITTINGS
59.9K 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 | $8.5M | $461K | -$8.1M |
| Ohio | $1.7M | $6.5M | +$4.8M |
| California | $1.2M | $585K | -$609K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $6.8M | -- | -$6.8M |
| CHICAGO, IL | $509K | $3.5M | +$3.0M |
| JFK INTERNATIONAL AIRPORT, NY | $238K | $1.7M | +$1.5M |