HS code · 4-digit heading
HS Code 44.06 – Railway or tramway sleepers (cross-ties) of wood
What HS 44.06 covers
Heading 4406 specifically covers 'Railway or tramway sleepers (cross-ties) of wood.' These are robust pieces of timber, typically rectangular or roughly rectangular in cross-section, designed to support railway tracks and hold the rails at a correct gauge. They can be untreated, but are often chemically treated (e.g., with creosote or other preservatives) to enhance durability, resist decay, and protect against insect infestation, given their exposure to harsh outdoor conditions. The scope of this heading is narrow, focusing exclusively on wood products intended for this specific infrastructural purpose. This classification is critical for trade compliance due to the specialized nature of the product, which may involve specific quality standards, environmental regulations concerning treated wood, and procurement processes for large-scale infrastructure projects. Historically, wooden sleepers have been fundamental to railway construction worldwide, contributing significantly to transportation networks. Within Chapter 44, this heading represents a highly functional and engineered wood product, distinct from general sawn timber due to its specific design and application in heavy-duty infrastructure.
- Covers
- Untreated oak railway sleepers
- Creosoted pine railway sleepers
- Pressure-treated hardwood tramway sleepers
- Reclaimed wooden railway sleepers (for landscaping, if still in original form)
- New hardwood cross-ties
- New softwood cross-ties
- Bridge timbers (specifically designed as sleepers)
- Switch ties
- Crossing timbers
- Treated timber for rail track foundations
- Untreated timber for rail track foundations
- Sleeper blocks
- Railway ties for light rail
- Tramway ties for streetcars
- Industrial railway sleepers
- Mine railway sleepers
- Timber for track reconstruction
- Heavy-duty timber sleepers
- Bespoke railway sleepers
- Narrow-gauge railway sleepers
- Standard-gauge railway sleepers.
- Examples
A large railway construction project in Australia imports durable hardwood sleepers, often from Indonesia or Malaysia, via bulk cargo vessels for laying new track in remote areas. These sleepers are chosen for their resilience in challenging environments. Concurrently, European tram networks regularly procure pressure-treated pine sleepers from suppliers within Germany or Poland, transported by truck, for routine maintenance and upgrading of urban tram lines. In North America, major freight rail companies in the United States purchase vast quantities of creosoted oak cross-ties from domestic producers or Canada to replace aging infrastructure on high-traffic routes, ensuring safety and operational efficiency.
Subheadings under 44.06 4
Codes often confused with 44.06
Common mistake. A common misclassification for 4406 occurs when general sawn timber is mistaken for sleepers. If the wood is merely rough-sawn timber (4407) and not specifically cut or prepared for use as railway or tramway sleepers, it should be classified elsewhere. The specific dimensions, often rough-sawn nature, and clear intended use as 'sleepers' are the key differentiators. Confusion can also arise with 4421 (Other articles of wood) if sleepers are highly processed or cut into smaller pieces for alternative uses, such as garden borders or furniture components, moving them beyond their primary classification. The crucial aspect is the product's design and purpose for rail infrastructure.
Top exporters and importers of HS code 4406, 2025
In 2025, the largest exporter of HS code 4406 in UN Comtrade data was the United States, with 48% of world exports; the largest importer in UN Comtrade data was Canada, with 28% 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 United States $157M 48% of world exports
- 2 Belgium $30M 9.1% of world exports
- 3 France $27M 8.3% of world exports
World total: $330M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Canada $133M 28% of world imports
- 2 Nigeria $102M 22% of world imports
- 3 Netherlands $42M 9.0% of world imports
World total: $468M 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.
EU Regulatory Requirements
This product category is subject to the EU Deforestation Regulation (EUDR). Importers must provide due diligence statements proving the product was not produced on deforested land after December 31, 2020.
This product is covered by the EU Timber Regulation (EUTR), requiring operators to exercise due diligence to minimize the risk of placing illegally harvested timber on the EU market.
Questions about HS 44.06
What is HS code 4406?
HS code 4406 is a 4-digit heading in the Harmonized System that covers: Railway or tramway sleepers (cross-ties) of wood. Heading 4406 specifically covers 'Railway or tramway sleepers (cross-ties) of wood.' These are robust pieces of timber, typically rectangular or roughly rectangular in cross-section, designed to support railway tracks and hold the rails at a correct gauge. They can be untreated, but are often chemically treated (e.g., with creosote or other preservatives) to enhance durability, resist decay, and protect against insect infestation, given their exposure to harsh outdoor conditions. The scope of this heading is narrow, focusing exclusively on wood products intended for this specific infrastructural purpose. This classification is critical for trade compliance due to the specialized nature of the product, which may involve specific quality standards, environmental regulations concerning treated wood, and procurement processes for large-scale infrastructure projects. Historically, wooden sleepers have been fundamental to railway construction worldwide, contributing significantly to transportation networks. Within Chapter 44, this heading represents a highly functional and engineered wood product, distinct from general sawn timber due to its specific design and application in heavy-duty infrastructure.
What products fall under HS code 4406?
Untreated oak railway sleepers, creosoted pine railway sleepers, pressure-treated hardwood tramway sleepers, reclaimed wooden railway sleepers (for landscaping, if still in original form), new hardwood cross-ties, new softwood cross-ties, bridge timbers (specifically designed as sleepers), switch ties, crossing timbers, treated timber for rail track foundations, untreated timber for rail track foundations, sleeper blocks, railway ties for light rail, tramway ties for streetcars, industrial railway sleepers, mine railway sleepers, timber for track reconstruction, heavy-duty timber sleepers, bespoke railway sleepers, narrow-gauge railway sleepers, standard-gauge railway sleepers.
What are common misclassifications for HS code 4406?
A common misclassification for 4406 occurs when general sawn timber is mistaken for sleepers. If the wood is merely rough-sawn timber (4407) and not specifically cut or prepared for use as railway or tramway sleepers, it should be classified elsewhere. The specific dimensions, often rough-sawn nature, and clear intended use as 'sleepers' are the key differentiators. Confusion can also arise with 4421 (Other articles of wood) if sleepers are highly processed or cut into smaller pieces for alternative uses, such as garden borders or furniture components, moving them beyond their primary classification. The crucial aspect is the product's design and purpose for rail infrastructure.
Which countries are the top exporters of goods under HS code 4406?
In 2025, the top exporters of HS code 4406 in UN Comtrade data were the United States ($157M, 48% of world exports), Belgium ($30M) and France ($27M). World exports came to about $330M, 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 4406?
In 2025, the top importers of HS code 4406 in UN Comtrade data were Canada ($133M, 28% of world imports), Nigeria ($102M) and the Netherlands ($42M). World imports came to about $468M, 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 4406 structured?
HS code 4406 is a 4-digit heading under Chapter 44 of the Harmonized System. The first 2 digits (44) identify the chapter, and digits 3-4 (06) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.