Product classification
HS code for Alloy steel tubing: 7306.50
Steel, alloy, tubes, pipes and hollow profiles (other than stainless steel or seamless), welded, of circular cross-section, n.e.c. in chapter 73.
Classification of alloy steel tubing under HS 7306.50
Alloy steel tubing of circular cross-section that is welded is classified under HS code 7306.50. This classification is determined by the material composition (alloy steel), the manufacturing method (welded), and the shape (circular cross-section). Chapter 73 covers articles of iron or steel, and heading 7306 specifically addresses tubes, pipes, and hollow profiles that are not seamless and do not meet the specific diameter requirements of heading 7305. The tubing must be made of alloy steel other than stainless steel. The classification process involves applying GRI 1 and GRI 6, ensuring that the product characteristics align with the subheading text. The welding process distinguishes these products from seamless tubes, which are classified in heading 7304. Furthermore, the circular cross-section is a critical requirement; if the tubing were square or rectangular, it would be classified under a different subheading within 7306.
- Covers
- Welded alloy steel pipes for structural use
- Circular alloy steel tubing for mechanical applications
- Electric resistance welded (ERW) alloy steel tubes
- Hollow profiles of alloy steel with circular cross-sections
- Low-alloy steel welded tubing
- Also under 7306.50
- Sumitomo Metal Industries alloy pipes
- Nippon Steel alloy tubes
- Tata Steel specialized profiles
- Baosteel alloy tubing
Codes often confused with 7306.50
Common mistake. The most common misclassification occurs between 7306.50 and 7304.51 or 7304.59, which are reserved for seamless alloy steel tubes. Importers must verify the longitudinal or spiral seam to confirm the welding. Another frequent error is confusing alloy steel with stainless steel; welded stainless steel tubes are classified under 7306.40. Additionally, if the external diameter of the pipe exceeds 406.4 mm, it must be classified under heading 7305, even if it is welded and made of alloy steel. Finally, tubes with non-circular cross-sections (e.g., square or oval) are classified under 7306.61 or 7306.69 rather than 7306.50.
Top exporters and importers of HS 730650 (the code used for alloy steel tubing), 2025
In 2025, the largest exporter of HS 730650 (the code used for alloy steel tubing) in UN Comtrade data was Germany, with 21% of world exports; the largest importer in UN Comtrade data was Mexico, 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 730650, not only alloy steel tubing.
Top exporters 2025 · share of world exports
- 1 Germany $125M 21% of world exports
- 2 China $85M 15% of world exports
- 3 United States $78M 13% of world exports
World total: $586M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Mexico $82M 12% of world imports
- 2 Saudi Arabia $50M 7.5% of world imports
- 3 United States $47M 7.2% of world imports
World total: $660M 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 that did not report are estimated from what other countries recorded trading with them. 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 alloy steel tubing
Brazil classifies alloy steel tubing under NCM 7306.50.00: HS 7306.50 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 alloy steel tubing
What is the HS code for Alloy steel tubing?
The HS code for Alloy steel tubing is 730650 (Steel, alloy; tubes, pipes and hollow profiles (other than stainless steel or seamless), welded, of circular cross-section, n.e.c. in chapter 73). Welded alloy steel tubing of a circular cross-section is classified under HS code 7306.50.
How do I classify Alloy steel tubing for customs?
Alloy steel tubing is classified under HS code 730650 — Steel, alloy; tubes, pipes and hollow profiles (other than stainless steel or seamless), welded, of circular cross-section, n.e.c. in chapter 73. This is a 6-digit subheading level code.
Does this code include seamless alloy steel pipes?
No, seamless alloy steel pipes are classified under heading 7304, depending on whether they are cold-drawn or hot-rolled.
Which countries are the top exporters of alloy steel tubing (HS 730650)?
In 2025, the top exporters of HS 730650 (the code used for alloy steel tubing) in UN Comtrade data were Germany ($125M, 21% of world exports), China ($85M) and the United States ($78M). World exports came to about $586M, 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 alloy steel tubing (HS 730650)?
In 2025, the top importers of HS 730650 (the code used for alloy steel tubing) in UN Comtrade data were Mexico ($82M, 12% of world imports), Saudi Arabia ($50M) and the United States ($47M). World imports came to about $660M, 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 Alloy steel tubing the same in all countries?
The base HS code 730650 for Alloy steel tubing 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 alloy steel tubing in Brazil?
In Brazil, alloy steel tubing (HS 730650) is classified under NCM 7306.50.00.