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HSChapter 55
U.S. imports of synthetic filament tow of polypropylene (HS 550140) totaled $129K in April 2026, traded with 5 countries.
Importers of Synthetic Filament Tow of Polypropylene paid $55K in duties in April 2026 — an effective duty rate of 42% on $129K in dutiable value, based on actual customs collections rather than the published tariff schedule. Synthetic Filament Tow of Polypropylene imports of $129K in April 2026 ran 26% below the year-to-date monthly average of $174K.
Last updated: April 2026 dataPolypropylene filament tow occupies a distinct niche among synthetic tow types due to its low density, chemical resistance, and suitability for geotextile, rope, and nonwoven applications. Classified under a single line (5501400000), US imports are led by China, with Belgium and the United Kingdom also serving as notable sources — the European suppliers often reflecting specialty or higher-denier grades. Polypropylene tow from China is subject to Section 301 tariffs, a factor that has encouraged some buyers to evaluate European or other alternative origins.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Filament tow under heading 5501 consists of a large bundle of parallel continuous filaments without twist, intended for cutting or further processing. Polypropylene strip or flat yarn would fall under Chapter 54 or Chapter 39 depending on dimensions and cross-section. CBP guidance focuses on filament count, bundle structure, and whether the product is presented in a form suitable for cutting into staple fiber.
Geotextile manufacturing, marine rope and cordage, and spunbond nonwoven production are the primary downstream applications. Demand in the construction and infrastructure sectors can create cyclical import patterns tied to project pipelines and seasonal construction activity.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $128K | $87K | -$42K |
| LATVIA | $580 | -- | -$580 |
| BELGIUM | -- | -- | -- |
| QATAR | -- | -- | -- |
| UNITED KINGDOM | -- | -- | -- |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 5501400000 | SYNTHETIC FILAMENT TOW, OF POLYPROPYLENE | $129K | 42.39% | $55K |
SYNTHETIC FILAMENT TOW, OF POLYPROPYLENE
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5501400000 | SYNTHETIC FILAMENT TOW, OF POLYPROPYLENE | $87K |
SYNTHETIC FILAMENT TOW, OF POLYPROPYLENE
332 kg
SYN STP FIB NT CRD, CMB OR PRSD SPNG, OF POLYESTER
HS 550320
ARTIF STP FIB NT CRD, CMB OR PRSD SPNG, VIS RAYON
HS 550410
YRN N SW TH MM ST FIB RT SL SYN STP FIB >=85% S FB
HS 551110
STPL FIB ARAMIDS NOT CARD/COMBD/PRCSD FOR SPINNING
HS 550311
SYN STP FIB NT CRD, CMB OR PRSD SPNG, ACRY/MODACRY
HS 550330
SYN STP FIB NOT CARD, CMB OR PRSD SPNG, NESOI
HS 550390
| State | Imports | Exports | Balance |
|---|---|---|---|
| New York | $129K | -- | -$129K |
| Virginia | -- | $87K | +$87K |
| California | -- | -- | -- |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEW YORK, NY | $128K | -- | -$128K |
| JFK INTERNATIONAL AIRPORT, NY | -- | $87K | +$87K |
| NEW ORLEANS, LA | $580 | -- | -$580 |