Product classification
HS code for Stainless steel butt weld fittings: 7307.23
Steel, stainless, tube or pipe fittings, butt welding fittings.
Classification of stainless steel butt weld fittings under HS 7307.23
Stainless steel butt weld fittings are classified under HS code 7307.23. This code is part of Chapter 73, which covers articles of iron or steel. Heading 7307 specifically addresses tube or pipe fittings. The classification is determined by two main factors: the material composition (stainless steel) and the connection method (butt welding). Butt weld fittings are designed to be welded in place at their ends to connect pipes together and allow changes in direction, pipe diameter, or branching. Because they are made of stainless steel (defined in Note 1(e) to Chapter 72), they fall under the 7307.2x series, and the specific "butt welding" characteristic directs them to 7307.23. These fittings are widely used in industries requiring corrosion resistance, such as chemical processing, food production, and oil and gas. The classification applies regardless of whether the fitting is seamless or welded during its own manufacture, as long as the method of attachment to the pipe is butt welding. This code ensures that high-quality alloy fittings are distinguished from standard carbon steel fittings for trade statistics and duty application.
- Covers
- Stainless steel long radius and short radius elbows
- Stainless steel concentric and eccentric reducers
- Stainless steel equal and reducing tees (butt weld)
- Stainless steel pipe caps for welding
- Stainless steel cross fittings for butt welding
- Also under 7307.23
- Erne Fittings stainless steel butt-weld fittings
- Benkan Corporation stainless steel fittings
- Awaji Sangyo stainless steel fittings
- Tenaris stainless steel butt-weld components
Codes often confused with 7307.23
Common mistake. These fittings are frequently confused with 7307.21 (flanges) or 7307.22 (threaded fittings). The distinction lies entirely in the end-connection type. If the fitting has threads, it cannot be 7307.23. Additionally, if the fitting is made of carbon steel rather than stainless steel, it would be classified under 7307.93. Socket weld fittings are also different and fall under 7307.29.
Top exporters and importers of HS 730723 (the code used for stainless steel butt weld fittings), 2025
In 2025, the largest exporter of HS 730723 (the code used for stainless steel butt weld fittings) in UN Comtrade data was China, with 23% of world exports; the largest importer in UN Comtrade data was the United States, with 12% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 730723, not only stainless steel butt weld fittings.
Top exporters 2025 · share of world exports
- 1 China $316M 23% of world exports
- 2 Germany $151M 11% of world exports
- 3 South Korea $143M 11% of world exports
World total: $1.4B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $156M 12% of world imports
- 2 Germany $124M 9.6% of world imports
- 3 United Arab Emirates* ~$68M 5.3% of world imports · partner records ↗
World total: $1.3B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for stainless steel butt weld fittings
Brazil classifies stainless steel butt weld fittings under NCM 7307.23.00: HS 7307.23 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
EU Regulatory Requirements
This product falls under the Carbon Border Adjustment Mechanism (CBAM). Importers to the EU must declare embedded carbon emissions and purchase CBAM certificates.
Questions about stainless steel butt weld fittings
What is the HS code for Stainless steel butt weld fittings?
The HS code for Stainless steel butt weld fittings is 730723 (Steel, stainless; tube or pipe fittings, butt welding fittings). The HS code for these fittings is 7307.23.
How do I classify Stainless steel butt weld fittings for customs?
Stainless steel butt weld fittings is classified under HS code 730723 — Steel, stainless; tube or pipe fittings, butt welding fittings. This is a 6-digit subheading level code.
Can threaded stainless steel fittings use this code?
No, threaded stainless steel fittings are classified under HS code 7307.22. Butt weld fittings must have beveled or plain ends for welding.
Which countries are the top exporters of stainless steel butt weld fittings (HS 730723)?
In 2025, the top exporters of HS 730723 (the code used for stainless steel butt weld fittings) in UN Comtrade data were China ($316M, 23% of world exports), Germany ($151M) and South Korea ($143M). World exports came to about $1.4B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of stainless steel butt weld fittings (HS 730723)?
In 2025, the top importers of HS 730723 (the code used for stainless steel butt weld fittings) in UN Comtrade data were the United States ($156M, 12% of world imports), Germany ($124M) and the United Arab Emirates (about $68M). World imports came to about $1.3B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Stainless steel butt weld fittings the same in all countries?
The base HS code 730723 for Stainless steel butt weld fittings is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for stainless steel butt weld fittings in Brazil?
In Brazil, stainless steel butt weld fittings (HS 730723) is classified under NCM 7307.23.00.