HS code · 6-digit subheading
HS Code 7309.00 – Reservoirs, tanks, vats and similar containers; for any material (excluding compressed or liquefied gas), of iron or steel, capacity exceeding 300l, whether or not lined or heat insulated
HS code 7309.00 is the 6-digit subheading for reservoirs, tanks, vats and similar containers, for any material (excluding compressed or liquefied gas), of iron or steel, capacity exceeding 300l, whether or not lined or heat insulated. It is used for industrial water storage tanks, chemical reaction vessels, grain silos, fuel storage tanks and wine fermentation vats.
What HS 7309.00 covers
This category covers large iron or steel containers, such as reservoirs, tanks, and vats, with a capacity exceeding 300 liters, designed for storing various materials (excluding compressed or liquefied gases). These are crucial components in industrial infrastructure globally. Importers include chemical plants, food processing facilities, water treatment plants, agricultural enterprises, and oil refineries, all requiring substantial storage solutions. Exporters are typically heavy fabrication companies and engineering firms specializing in large-scale metal structures. Key aspects of trade involve material compatibility, structural integrity, internal lining requirements, insulation, compliance with international safety standards, and the logistical challenges associated with transporting and installing such large items, which are often custom-built or modular.
- Covers
- Industrial water storage tanks
- Chemical reaction vessels
- Grain silos
- Fuel storage tanks
- Wine fermentation vats
- Oil storage reservoirs
- Wastewater treatment tanks
- Examples
- CST Industries storage tanks
- ZCL Composites (now Shawcor) tanks
- McDermott International process vessels
- Chicago Bridge & Iron (CB&I) tanks
Codes often confused with 7309.00
Common mistake. Can be confused with 731010 (smaller containers, 50-300L) due to capacity difference, or containers for compressed gas if the 'excluding compressed or liquefied gas' is missed.
Top exporters and importers of HS code 730900, 2025
In 2025, the largest exporter of HS code 730900 in UN Comtrade data was China, with 20% of world exports; the largest importer in UN Comtrade data was the United States, with 9.9% 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 $1.0B 20% of world exports
- 2 Italy $360M 7.0% of world exports
- 3 Germany $335M 6.5% of world exports
World total: $5.1B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $479M 9.9% of world imports
- 2 Saudi Arabia $311M 6.4% of world imports
- 3 Germany $247M 5.1% of world imports
World total: $4.8B 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 codes for 7309.00 3
Brazil splits HS 7309.00 into 3 NCM codes, Mercosur's 8-digit tariff lines.
- 7309.00.10 Containers for grain or other solids, over 300 lPara armazenamento de grãos e outras matérias sólidas
- 7309.00.20 Liquid nitrogen cryo-containers, over 300 lRecipientes isotérmicos refrigerados a nitrogênio (azoto) líquido, do tipo utilizado para sêmen, sangue, tecidos biológicos e outros produtos semelhantes
- 7309.00.90 Other iron or steel tanks and vats, over 300 lOutros
All Brazil NCM codes in heading 73.09 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
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 HS 7309.00
What is HS code 730900?
HS code 730900 is a 6-digit subheading in the Harmonized System that covers: Reservoirs, tanks, vats and similar containers; for any material (excluding compressed or liquefied gas), of iron or steel, capacity exceeding 300l, whether or not lined or heat insulated. This category covers large iron or steel containers, such as reservoirs, tanks, and vats, with a capacity exceeding 300 liters, designed for storing various materials (excluding compressed or liquefied gases). These are crucial components in industrial infrastructure globally. Importers include chemical plants, food processing facilities, water treatment plants, agricultural enterprises, and oil refineries, all requiring substantial storage solutions. Exporters are typically heavy fabrication companies and engineering firms specializing in large-scale metal structures. Key aspects of trade involve material compatibility, structural integrity, internal lining requirements, insulation, compliance with international safety standards, and the logistical challenges associated with transporting and installing such large items, which are often custom-built or modular.
What products fall under HS code 730900?
Industrial water storage tanks, Chemical reaction vessels, Grain silos, Fuel storage tanks, Wine fermentation vats, Oil storage reservoirs, Wastewater treatment tanks
What are common misclassifications for HS code 730900?
Can be confused with 731010 (smaller containers, 50-300L) due to capacity difference, or containers for compressed gas if the 'excluding compressed or liquefied gas' is missed.
Which countries are the top exporters of goods under HS code 730900?
In 2025, the top exporters of HS code 730900 in UN Comtrade data were China ($1.0B, 20% of world exports), Italy ($360M) and Germany ($335M). World exports came to about $5.1B, 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 730900?
In 2025, the top importers of HS code 730900 in UN Comtrade data were the United States ($479M, 9.9% of world imports), Saudi Arabia ($311M) and Germany ($247M). World imports came to about $4.8B, 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 730900 structured?
HS code 730900 is a 6-digit subheading under the Harmonized System. The first 2 digits (73) identify the chapter, digits 3-4 (09) identify the heading, and digits 5-6 (00) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 730900?
Brazil splits HS code 730900 into 3 NCM codes: 7309.00.10 (Containers for grain or other solids, over 300 l), 7309.00.20 (Liquid nitrogen cryo-containers, over 300 l), 7309.00.90 (Other iron or steel tanks and vats, over 300 l). The first 6 digits of each match the HS code.