Product classification
HS code for Stainless steel welding fittings: 7307.23
Steel, stainless, tube or pipe fittings, butt welding fittings.
Classification of stainless steel welding fittings under HS 7307.23
Stainless steel welding fittings are classified under HS code 7307.23. Heading 7307 covers tube or pipe fittings of iron or steel. Within this heading, the 7307.2x series is reserved for stainless steel. Subheading 7307.23 specifically identifies butt-welding fittings. These are components used to connect pipes or tubes where the connection is made by welding the ends together. The classification is driven by the manufacturing method (butt-welding) and the material (stainless steel). These fittings are essential in industrial piping systems, particularly in the chemical, food processing, and oil and gas industries where corrosion resistance is paramount. The classification ensures that these critical industrial components are tracked separately from threaded or flanged fittings, which have different mechanical properties and installation requirements. The technical specifications of the fitting, such as its wall thickness and diameter, do not change the primary HS code but are relevant for detailed customs declarations.
- Covers
- Stainless steel butt-welding elbows
- Stainless steel butt-welding tees
- Stainless steel butt-welding reducers
- Stainless steel butt-welding caps
- Stainless steel butt-welding crosses
- Stainless steel stub ends for 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. The most common misclassification for these items is with other types of stainless steel fittings. For example, stainless steel flanges are classified under 7307.21, and threaded fittings are classified under 7307.22. It is also common to confuse these with fittings made of other types of steel, which would be classified under 7307.93 (butt-welding fittings of non-stainless steel). Accurate classification requires verifying the metallurgical composition of the steel and the specific method of attachment (welding vs. threading). Using the wrong code can lead to significant issues with industrial standards compliance and customs duties.
Top exporters and importers of HS 730723 (the code used for stainless steel welding fittings), 2025
In 2025, the largest exporter of HS 730723 (the code used for stainless steel welding 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 welding 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 welding fittings
Brazil classifies stainless steel welding 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 welding fittings
What is the HS code for Stainless steel welding fittings?
The HS code for Stainless steel welding fittings is 730723 (Steel, stainless; tube or pipe fittings, butt welding fittings). The HS code for stainless steel butt-welding tube or pipe fittings is 7307.23.
How do I classify Stainless steel welding fittings for customs?
Stainless steel welding fittings is classified under HS code 730723 — Steel, stainless; tube or pipe fittings, butt welding fittings. This is a 6-digit subheading level code.
Are socket-weld fittings included in this code?
Generally, 7307.23 is specific to butt-welding fittings. Socket-weld fittings may sometimes be classified under 7307.29 (other stainless steel fittings) depending on local customs interpretations and the specific design of the fitting.
Which countries are the top exporters of stainless steel welding fittings (HS 730723)?
In 2025, the top exporters of HS 730723 (the code used for stainless steel welding 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 welding fittings (HS 730723)?
In 2025, the top importers of HS 730723 (the code used for stainless steel welding 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 welding fittings the same in all countries?
The base HS code 730723 for Stainless steel welding 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 welding fittings in Brazil?
In Brazil, stainless steel welding fittings (HS 730723) is classified under NCM 7307.23.00.