Product classification
HS code for Welded steel rectangular tube: 7306.61
Iron or steel (excluding cast iron), tubes, pipes and hollow profiles (not seamless), welded, of square or rectangular cross-section, n.e.c. in chapter 73.
Classification of welded steel rectangular tube under HS 7306.61
Welded steel rectangular tubes are classified under HS code 7306.61. This classification falls under Chapter 73, which covers articles of iron or steel. Heading 7306 is designated for "Other tubes, pipes and hollow profiles (for example, open seam or welded, riveted or similarly closed), of iron or steel." Within this heading, the code 7306.61 is specific to tubes and pipes that have a square or rectangular cross-section and are not seamless. The classification process requires identifying the manufacturing method (welding vs. seamless) and the geometric profile. Since these tubes are formed from flat-rolled steel and then joined by a longitudinal or spiral weld, they are excluded from heading 7304, which is reserved for seamless tubes. The rectangular shape further narrows the classification to 7306.61, distinguishing it from circular or other non-rectangular profiles. These products are widely used in construction, furniture manufacturing, and automotive frames due to their structural efficiency.
- Covers
- Welded rectangular hollow sections (RHS)
- Welded square hollow sections (SHS)
- Electric Resistance Welded (ERW) rectangular steel tubing
- Structural steel box sections (welded)
- Cold-formed welded rectangular tubes
- Also under 7306.61
- ArcelorMittal structural tubing
- Tata Steel RHS
- Nippon Steel SHS
- SSAB structural profiles
Codes often confused with 7306.61
Common mistake. A common error is classifying these products under 7304.41 or 7304.90, which are for seamless tubes. If there is any visible or internal weld seam, 7306 must be used. Another misclassification occurs with 7306.30, which is for welded tubes of circular cross-section. Additionally, if the tube is further worked into a specific part for a structure (like a finished truss), it might be moved to 7308.90, though the raw tube remains 7306.61.
Top exporters and importers of HS 730661 (the code used for welded steel rectangular tube), 2025
In 2025, the largest exporter of HS 730661 (the code used for welded steel rectangular tube) in UN Comtrade data was Italy, with 19% of world exports; the largest importer in UN Comtrade data was Germany, with 9.2% 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 730661, not only welded steel rectangular tube.
Top exporters 2025 · share of world exports
- 1 Italy $1.4B 19% of world exports
- 2 China $1.3B 18% of world exports
- 3 Türkiye $544M 7.8% of world exports
World total: $7.0B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $635M 9.2% of world imports
- 2 United States $555M 8.0% of world imports
- 3 France $397M 5.7% of world imports
World total: $6.9B 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 welded steel rectangular tube
Brazil classifies welded steel rectangular tube under NCM 7306.61.00: HS 7306.61 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 welded steel rectangular tube
What is the HS code for Welded steel rectangular tube?
The HS code for Welded steel rectangular tube is 730661 (Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), welded, of square or rectangular cross-section, n.e.c. in chapter 73). The specific HS code for welded tubes and hollow profiles of square or rectangular cross-section is 7306.61.
How do I classify Welded steel rectangular tube for customs?
Welded steel rectangular tube is classified under HS code 730661 — Iron or steel (excluding cast iron); tubes, pipes and hollow profiles (not seamless), welded, of square or rectangular cross-section, n.e.c. in chapter 73. This is a 6-digit subheading level code.
Does the steel grade affect the 7306.61 classification?
While the steel grade (e.g., stainless vs. alloy) may affect the 8-digit or 10-digit statistical suffix, the 6-digit HS code 7306.61 remains the primary classification for welded rectangular profiles.
Which countries are the top exporters of welded steel rectangular tube (HS 730661)?
In 2025, the top exporters of HS 730661 (the code used for welded steel rectangular tube) in UN Comtrade data were Italy ($1.4B, 19% of world exports), China ($1.3B) and Türkiye ($544M). World exports came to about $7.0B, 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 welded steel rectangular tube (HS 730661)?
In 2025, the top importers of HS 730661 (the code used for welded steel rectangular tube) in UN Comtrade data were Germany ($635M, 9.2% of world imports), the United States ($555M) and France ($397M). World imports came to about $6.9B, 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 Welded steel rectangular tube the same in all countries?
The base HS code 730661 for Welded steel rectangular tube 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 welded steel rectangular tube in Brazil?
In Brazil, welded steel rectangular tube (HS 730661) is classified under NCM 7306.61.00.