HS code · 4-digit heading
HS Code 83.07 – Tubing; flexible, with or without fittings, of base metal
What HS 83.07 covers
Heading 8307 specifically covers flexible tubing of base metal, whether or not fitted with connectors or other accessories. This classification is critical for industries involved in plumbing, HVAC, automotive, industrial machinery, and electrical installations. The defining characteristics are 'flexible' and 'of base metal.' This differentiates it from rigid pipes and tubes of base metal (typically Chapter 73) and non-metallic flexible hoses (e.g., rubber in Chapter 40, plastic in Chapter 39). The scope includes corrugated metal hoses, braided metal hoses, and interlocked metal conduits used for conveying liquids, gases, or protecting electrical wiring. Key sub-categories might include flexible stainless steel hoses, flexible brass connectors, and flexible metal conduits. The 'of base metal' criterion is absolute; even if a hose has a plastic lining, if the primary flexible structure is base metal, it falls here. This heading is part of Chapter 83, 'Miscellaneous articles of base metal,' and Section XV, 'Base Metals and Articles of Base Metal.' This placement highlights that these are finished industrial components rather than raw materials. Accurate classification is essential for trade compliance, ensuring correct tariff application, especially given the various applications and potential for confusion with other types of tubing or complete machines that incorporate them.
- Covers
- Flexible stainless steel corrugated tubing
- Flexible brass gas connector hoses
- Flexible metal electrical conduits
- Flexible metal shower hoses
- Flexible interlocked metal hose
- Flexible metal hydraulic lines
- Flexible metal coolant lines
- Flexible metal fuel lines
- Flexible metal exhaust tubing
- Flexible metal vacuum hoses
- Flexible metal medical gas lines
- Flexible braided metal water connectors
- Flexible metal oil lines
- Flexible metal conduit for fiber optic cables
- Flexible metal industrial process hoses
- Flexible metal pressure hoses
- Flexible metal expansion joints
- Flexible metal conduit for wiring harnesses
- Flexible metal drainage hoses
- Flexible metal vent hoses.
- Examples
An automotive parts manufacturer in Germany imports flexible stainless steel exhaust tubing from Turkey for integration into vehicle exhaust systems, utilizing established European supply chains. A plumbing supply company in Australia sources large quantities of flexible braided metal water connector hoses from China for both residential and commercial installations across the country. An industrial machinery producer in the United States imports flexible metal electrical conduits from Canada, benefiting from duty reductions under USMCA, to protect wiring in its heavy equipment. A major HVAC system installer in the Middle East imports flexible copper-alloy tubing from South Korea for air conditioning installations.
Subheadings under 83.07 2
Codes often confused with 83.07
Common mistake. Common misclassifications under 8307 revolve around the material and flexibility. Traders often confuse flexible base metal tubing with rigid pipes and tubes of base metal (Chapter 73), which are designed for structural or fixed installations. Another frequent error is classifying hoses made primarily of plastic (Chapter 39, e.g., 3917) or rubber (Chapter 40, e.g., 4009) under 8307, even if they have minor metal fittings; the 'of base metal' criterion refers to the tubing itself. Additionally, complete machines or appliances that incorporate flexible tubing (e.g., a washing machine with its supply hoses) are classified as the machine itself (e.g., Chapter 84), not the individual hose. The 'flexible' and 'base metal' aspects of the tubing are the defining factors.
Top exporters and importers of HS code 8307, 2025
In 2025, the largest exporter of HS code 8307 in UN Comtrade data was China, with 16% of world exports; the largest importer in UN Comtrade data was the United States, with 10% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 China $580M 16% of world exports
- 2 France $529M 14% of world exports
- 3 Germany $414M 11% of world exports
World total: $3.7B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $356M 10% of world imports
- 2 Brazil $335M 9.4% of world imports
- 3 Angola $247M 7.0% of world imports
World total: $3.5B 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.
Questions about HS 83.07
What is HS code 8307?
HS code 8307 is a 4-digit heading in the Harmonized System that covers: Tubing; flexible, with or without fittings, of base metal. Heading 8307 specifically covers flexible tubing of base metal, whether or not fitted with connectors or other accessories. This classification is critical for industries involved in plumbing, HVAC, automotive, industrial machinery, and electrical installations. The defining characteristics are 'flexible' and 'of base metal.' This differentiates it from rigid pipes and tubes of base metal (typically Chapter 73) and non-metallic flexible hoses (e.g., rubber in Chapter 40, plastic in Chapter 39). The scope includes corrugated metal hoses, braided metal hoses, and interlocked metal conduits used for conveying liquids, gases, or protecting electrical wiring. Key sub-categories might include flexible stainless steel hoses, flexible brass connectors, and flexible metal conduits. The 'of base metal' criterion is absolute; even if a hose has a plastic lining, if the primary flexible structure is base metal, it falls here. This heading is part of Chapter 83, 'Miscellaneous articles of base metal,' and Section XV, 'Base Metals and Articles of Base Metal.' This placement highlights that these are finished industrial components rather than raw materials. Accurate classification is essential for trade compliance, ensuring correct tariff application, especially given the various applications and potential for confusion with other types of tubing or complete machines that incorporate them.
What products fall under HS code 8307?
Flexible stainless steel corrugated tubing, flexible brass gas connector hoses, flexible metal electrical conduits, flexible metal shower hoses, flexible interlocked metal hose, flexible metal hydraulic lines, flexible metal coolant lines, flexible metal fuel lines, flexible metal exhaust tubing, flexible metal vacuum hoses, flexible metal medical gas lines, flexible braided metal water connectors, flexible metal oil lines, flexible metal conduit for fiber optic cables, flexible metal industrial process hoses, flexible metal pressure hoses, flexible metal expansion joints, flexible metal conduit for wiring harnesses, flexible metal drainage hoses, flexible metal vent hoses.
What are common misclassifications for HS code 8307?
Common misclassifications under 8307 revolve around the material and flexibility. Traders often confuse flexible base metal tubing with rigid pipes and tubes of base metal (Chapter 73), which are designed for structural or fixed installations. Another frequent error is classifying hoses made primarily of plastic (Chapter 39, e.g., 3917) or rubber (Chapter 40, e.g., 4009) under 8307, even if they have minor metal fittings; the 'of base metal' criterion refers to the tubing itself. Additionally, complete machines or appliances that incorporate flexible tubing (e.g., a washing machine with its supply hoses) are classified as the machine itself (e.g., Chapter 84), not the individual hose. The 'flexible' and 'base metal' aspects of the tubing are the defining factors.
Which countries are the top exporters of goods under HS code 8307?
In 2025, the top exporters of HS code 8307 in UN Comtrade data were China ($580M, 16% of world exports), France ($529M) and Germany ($414M). World exports came to about $3.7B, 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 goods under HS code 8307?
In 2025, the top importers of HS code 8307 in UN Comtrade data were the United States ($356M, 10% of world imports), Brazil ($335M) and Angola ($247M). World imports came to about $3.5B, 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.
How is HS code 8307 structured?
HS code 8307 is a 4-digit heading under Chapter 83 of the Harmonized System. The first 2 digits (83) identify the chapter, and digits 3-4 (07) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.