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HSChapter 44
Pressure-treated coniferous railroad ties — the dominant form used in North American mainline track — enter under a single 10-digit line (4406910000), with Canada as the primary US supplier. Impregnation typically involves creosote or copper-based preservatives applied under pressure, and the resulting product is subject to EPA regulations governing treated wood products in addition to standard customs requirements. Canada's geographic proximity and extensive softwood timber resources make it the natural dominant source for this high-volume infrastructure input. Importers should confirm that the preservative system used complies with EPA registration requirements for the intended end use.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Yes. Creosote is a registered pesticide under FIFRA, and wood treated with it must comply with EPA label requirements governing use, handling, and disposal. Importers should verify that the treating facility used an EPA-registered creosote formulation and that the product is labeled in accordance with EPA requirements before distribution in the US.
The distinction rests on whether a preservative has been applied under pressure or vacuum to penetrate the wood fiber. Treatment records, mill certificates, or chemical analysis can confirm impregnation status. CBP may request such documentation if the treatment status is not evident from the shipment's commercial invoice or packing list.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | -- | $1.2M | +$1.2M |
| EGYPT | -- | $338K | +$338K |
| CANADA | -- | $60K | +$60K |
| PERU | -- | $31K | +$31K |
| CAYMAN ISLANDS | -- | $8K | +$8K |
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 4406910000 | RAILWAY/TRAMWAY SLEEPERS, CONIFEROUS, IMPREGNATED | $1.7M |
RAILWAY/TRAMWAY SLEEPERS, CONIFEROUS, IMPREGNATED
4.0K m3
MIX SPF WOOD SAWN/CHIP LENGTHW,SLICED/PEEL,GT 6MM
HS 440713
OTHER ARTICLES OF WOOD, NESOI
HS 442199
ORIENTED STRAND BOARD (OSB), OF WOOD
HS 441012
PLYWD/ETC,NES,GT-1 OUT PLY NONCNF SPECES IN SUBHD
HS 441233
BUILDERS' JOINERY AND CARPENTRY OF WOOD, NESOI
HS 441899
OTHER CONIF WOOD, SAWN/CHIPED LENTGW, THKNS GT 6MM
HS 440719
| State | Imports | Exports | Balance |
|---|---|---|---|
| Pennsylvania | -- | $1.2M | +$1.2M |
| Maryland | -- | $338K | +$338K |
| Missouri | -- | $49K | +$49K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| EAGLE PASS, TX | -- | $1.2M | +$1.2M |
| SAVANNAH, GA | -- | $338K | +$338K |
| PORTAL, ND | -- | $49K | +$49K |