Product classification

HS code for Plastic building materials: 3925.90

Plastics, builders' ware, n.e.c. or included in heading no. 3925.

Classification of plastic building materials under HS 3925.90

HS code 3925.90 is used for plastic building materials that are not elsewhere specified or included within heading 3925. Heading 3925 covers builders' ware of plastics. While specific subheadings exist for items like reservoirs, tanks, doors, windows, and shutters, 3925.90 serves as the residual category for other structural plastic components used in permanent construction. This includes items that are fixed to walls, floors, or ceilings and are intended to be permanent fixtures of a building. The classification depends on the item being a "builders' ware" rather than a general plastic article. This distinction is crucial because Chapter 39 contains many headings for plastic goods, but 3925 is specifically reserved for items used in the construction of buildings. To qualify for this code, the product must be designed for permanent installation. This includes architectural ornaments, structural supports, and protective elements like gutters. The use of plastic in construction has grown significantly due to its durability and resistance to corrosion, making 3925.90 a high-volume code for international trade in the construction sector.

Covers
  • Plastic gutters and fittings
  • Permanent plastic wall or ceiling coverings
  • Plastic cornices and architectural ornaments
  • Structural components for modular buildings
  • Permanent plastic shelving intended for fixed installation
  • Plastic fencing and railings (permanent)
Also under 3925.90
  • Marley plastic gutters
  • CertainTeed vinyl siding
  • Georgia-Pacific plastic trim
  • Kömmerling PVC profiles
  • Wavin plastic pipes (building use)

Codes often confused with 3925.90

Common mistake. Plastic building materials are often misclassified under HS code 3917, which covers plastic pipes and tubes. While gutters (3925.90) may look like pipes, they are considered builders' ware rather than general-purpose tubing. Another common error is using HS code 3918 for plastic wall or ceiling coverings. However, 3918 is specifically for floor coverings and wall/ceiling coverings that come in rolls or tiles and consist of a support impregnated or covered with plastic. If the item is a rigid panel intended for permanent structural use, 3925.90 is more appropriate. Finally, general plastic articles are often wrongly placed in 3926.90, but the specific "builders' ware" designation of 3925 takes precedence for construction materials.

39.17Tubes, pipes and hoses and fittings thereof (for example, joints, elbows, flanges), of plastics39.18Floor coverings of plastics, self-adhesive or not, in rolls or tiles; wall or ceiling coverings of plastics, in rolls of a width not less than 45cm3926.90Plastics; other articles n.e.c. in chapter 3939.25Plastics; builders' wares n.e.c. or included

Top exporters and importers of HS 392590 (the code used for plastic building materials), 2025

In 2025, the largest exporter of HS 392590 (the code used for plastic building materials) in UN Comtrade data was China, with 32% of world exports; the largest importer in UN Comtrade data was the United States, with 14% 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 392590, not only plastic building materials.

Top exporters 2025 · share of world exports

  1. 1 China $3.0B
  2. 2 Germany $1.0B
  3. 3 Canada $658M

World total: $9.4B Reported figures on UN Comtrade ↗

Top importers 2025 · share of world imports

  1. 1 United States $1.2B
  2. 2 Germany $586M
  3. 3 France $515M

World total: $8.6B 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 plastic building materials

Brazil splits HS 3925.90 into 2 NCM codes. Pick the one that matches your product:

Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.

Questions about plastic building materials

What is the HS code for Plastic building materials?

The HS code for Plastic building materials is 392590 (Plastics; builders' ware, n.e.c. or included in heading no. 3925). The HS code for builders' ware of plastics not specified elsewhere is 3925.90.

How do I classify Plastic building materials for customs?

Plastic building materials is classified under HS code 392590 — Plastics; builders' ware, n.e.c. or included in heading no. 3925. This is a 6-digit subheading level code.

Are plastic windows included in 3925.90?

No, plastic windows and their frames are specifically classified under HS code 3925.20.

Which countries are the top exporters of plastic building materials (HS 392590)?

In 2025, the top exporters of HS 392590 (the code used for plastic building materials) in UN Comtrade data were China ($3.0B, 32% of world exports), Germany ($1.0B) and Canada ($658M). World exports came to about $9.4B, 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 building materials (HS 392590)?

In 2025, the top importers of HS 392590 (the code used for plastic building materials) in UN Comtrade data were the United States ($1.2B, 14% of world imports), Germany ($586M) and France ($515M). World imports came to about $8.6B, 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 building materials the same in all countries?

The base HS code 392590 for Plastic building materials 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 building materials in Brazil?

Brazil splits HS 392590 into 2 NCM codes, so the right one for plastic building materials depends on the product's details: 3925.90.10 (Expanded polystyrene (EPS) builders' ware), 3925.90.90 (Other plastic builders' ware).