Product classification
HS code for Plastic water tanks: 3925.10
Plastics, builders' ware, reservoirs, tanks, vats and similar containers of a capacity exceeding 300 litres.
Classification of plastic water tanks under HS 3925.10
Plastic water tanks with a capacity exceeding 300 liters are classified under HS code 3925.10. This code is part of heading 3925, which covers builders' ware of plastics, not elsewhere specified or included. Subheading 3925.10 specifically mentions reservoirs, tanks, vats, and similar containers. A critical factor for this classification is the volume; the container must have a capacity of more than 300 liters. These tanks are typically used in construction or permanent installations for water storage, chemical containment, or agricultural purposes. The classification reflects their role as structural or building components rather than simple transport containers. According to Note 11 to Chapter 39, heading 3925 applies only to specific articles used in the construction of buildings or other structures. Therefore, large-scale tanks designed for permanent or semi-permanent installation for water management fall squarely within this category.
- Covers
- Large plastic water reservoirs
- Plastic septic tanks
- Industrial plastic vats (>300L)
- Rainwater harvesting tanks
- Plastic chemical storage tanks (stationary)
- Agricultural plastic cisterns
- Also under 3925.10
- Enduramaxx water tanks
- Snyder Industries chemical tanks
- Bushman Tanks rainwater tanks
- Polymaster industrial tanks
- Roth Double-Wall oil tanks
Codes often confused with 3925.10
Common mistake. A common misclassification occurs with HS code 3923.90, which covers other articles for the conveyance or packing of goods. If a tank is used for transporting liquids rather than stationary storage, or if its capacity is 300 liters or less, it cannot be classified under 3925.10. Additionally, smaller plastic containers are often wrongly placed here when they should be in 3923 or 3926.90 depending on their specific design and lack of "builders' ware" characteristics.
Top exporters and importers of HS 392510 (the code used for plastic water tanks), 2025
In 2025, the largest exporter of HS 392510 (the code used for plastic water tanks) in UN Comtrade data was Germany, with 20% of world exports; the largest importer in UN Comtrade data was the United States, with 7.6% 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 392510, not only plastic water tanks.
Top exporters 2025 · share of world exports
- 1 Germany $294M 20% of world exports
- 2 Netherlands $129M 8.9% of world exports
- 3 China $93M 6.4% of world exports
World total: $1.5B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $96M 7.6% of world imports
- 2 Germany $94M 7.4% of world imports
- 3 Belgium $84M 6.6% of world imports
World total: $1.3B 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 plastic water tanks
Brazil classifies plastic water tanks under NCM 3925.10.00: HS 3925.10 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about plastic water tanks
What is the HS code for Plastic water tanks?
The HS code for Plastic water tanks is 392510 (Plastics; builders' ware, reservoirs, tanks, vats and similar containers of a capacity exceeding 300 litres). Plastic water tanks with a capacity exceeding 300 liters are classified under HS code 3925.10.
How do I classify Plastic water tanks for customs?
Plastic water tanks is classified under HS code 392510 — Plastics; builders' ware, reservoirs, tanks, vats and similar containers of a capacity exceeding 300 litres. This is a 6-digit subheading level code.
What if the plastic tank is smaller than 300 liters?
If the capacity is 300 liters or less, the tank is generally classified under HS code 3923.90 or 3926.90, as it no longer meets the criteria for builders' ware reservoirs.
Which countries are the top exporters of plastic water tanks (HS 392510)?
In 2025, the top exporters of HS 392510 (the code used for plastic water tanks) in UN Comtrade data were Germany ($294M, 20% of world exports), the Netherlands ($129M) and China ($93M). World exports came to about $1.5B, 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.
Which countries are the top importers of plastic water tanks (HS 392510)?
In 2025, the top importers of HS 392510 (the code used for plastic water tanks) in UN Comtrade data were the United States ($96M, 7.6% of world imports), Germany ($94M) and Belgium ($84M). World imports came to about $1.3B, 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 Plastic water tanks the same in all countries?
The base HS code 392510 for Plastic water tanks 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 plastic water tanks in Brazil?
In Brazil, plastic water tanks (HS 392510) is classified under NCM 3925.10.00.