Product classification
HS code for Carbon steel welding fittings: 7307.93
Iron or steel, tube or pipe fittings, butt welding fittings, other than stainless steel.
Classification of carbon steel welding fittings under HS 7307.93
Carbon steel welding fittings, specifically butt-welding types, are classified under HS code 7307.93. This classification is determined by the fitting's end preparation and its material. Heading 7307 covers tube or pipe fittings of iron or steel. Within this heading, the subheadings are organized to distinguish between cast and non-cast items, and then by material type. Subheading 7307.93 is specifically dedicated to butt-welding fittings made of iron or steel other than stainless steel. Butt-welding fittings are characterized by ends that are beveled to allow for a full-penetration weld to the pipe. This method of connection is preferred in high-pressure and high-temperature applications because it creates a leak-proof, continuous metal structure. The classification includes a variety of shapes such as 45-degree and 90-degree elbows, equal and reducing tees, concentric and eccentric reducers, and pipe caps. To fall under this code, the material must be carbon steel (non-alloy steel) or other alloy steel that does not meet the chromium requirements of stainless steel. The manufacturing of these fittings typically follows standards like ASME B16.9.
- Covers
- Carbon steel butt-weld elbows (45 and 90 degree)
- Butt-weld tees and crosses (non-stainless)
- Concentric and eccentric carbon steel reducers
- Butt-weld pipe caps
- Long radius and short radius bends (butt-weld)
- Also under 7307.93
- Tenaris butt weld fittings
- Erne Fittings
- BKL butt weld fittings
- Awaji butt weld fittings
Codes often confused with 7307.93
Common mistake. A frequent misclassification occurs with 7307.23, which is the code for stainless steel butt-welding fittings. The distinction is based on the alloy content defined in Chapter 72. Another common error is confusing butt-welding fittings with threaded fittings, which belong under 7307.92. Socket-weld fittings, which are also welded but involve inserting the pipe into a recessed area, are often incorrectly placed here; they should generally be in 7307.99. Finally, cast iron welding fittings should be classified under 7307.11 or 7307.19.
Top exporters and importers of HS 730793 (the code used for carbon steel welding fittings), 2025
In 2025, the largest exporter of HS 730793 (the code used for carbon steel welding fittings) in UN Comtrade data was China, with 27% of world exports; the largest importer in UN Comtrade data was the United States, with 18% 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 730793, not only carbon steel welding fittings.
Top exporters 2025 · share of world exports
- 1 China $448M 27% of world exports
- 2 Italy $307M 18% of world exports
- 3 South Korea $195M 12% of world exports
World total: $1.7B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $302M 18% of world imports
- 2 United Arab Emirates* ~$128M 7.8% of world imports · partner records ↗
- 3 Saudi Arabia $74M 4.5% of world imports
World total: $1.6B 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 carbon steel welding fittings
Brazil classifies carbon steel welding fittings under NCM 7307.93.00: HS 7307.93 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 carbon steel welding fittings
What is the HS code for Carbon steel welding fittings?
The HS code for Carbon steel welding fittings is 730793 (Iron or steel; tube or pipe fittings, butt welding fittings, other than stainless steel). The HS code for butt-welding fittings made of iron or non-alloy steel is 7307.93.
How do I classify Carbon steel welding fittings for customs?
Carbon steel welding fittings is classified under HS code 730793 — Iron or steel; tube or pipe fittings, butt welding fittings, other than stainless steel. This is a 6-digit subheading level code.
What is the difference between 7307.93 and 7307.92?
7307.93 is for butt-welding fittings (beveled ends), while 7307.92 is specifically for threaded elbows and bends.
Which countries are the top exporters of carbon steel welding fittings (HS 730793)?
In 2025, the top exporters of HS 730793 (the code used for carbon steel welding fittings) in UN Comtrade data were China ($448M, 27% of world exports), Italy ($307M) and South Korea ($195M). World exports came to about $1.7B, 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 carbon steel welding fittings (HS 730793)?
In 2025, the top importers of HS 730793 (the code used for carbon steel welding fittings) in UN Comtrade data were the United States ($302M, 18% of world imports), the United Arab Emirates (about $128M) and Saudi Arabia ($74M). World imports came to about $1.6B, 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 Carbon steel welding fittings the same in all countries?
The base HS code 730793 for Carbon 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 carbon steel welding fittings in Brazil?
In Brazil, carbon steel welding fittings (HS 730793) is classified under NCM 7307.93.00.