Harmonized System
U.S. imports of Flexible Plastic Tubes, Pipes & Hoses, Not Reinforced, With Fittings (HS 391733) totaled $42.4M in August 2026, imported from 60 countries.
Importers of Flexible Plastic Tubes, Pipes & Hoses, Not Reinforced, With Fittings paid $2.2M in duties in August 2026, an average duty rate of 5.19% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataFlexible plastic hose assemblies — tubing presented with fittings already attached — serve as ready-to-install fluid-transfer components in automotive, HVAC, laboratory, and industrial applications, where the fitting type and connection standard often drive purchasing decisions as much as the hose material itself. All US imports enter on a single line (3917330000), and the presence of fittings at time of importation is the key classification trigger distinguishing this heading from the without-fittings provision. Singapore leads US supply under this heading, a notable concentration that reflects the island's role as a regional hub for precision fluid-handling component assembly. Importers should confirm that the fittings are permanently or semi-permanently attached, as loose fittings packed separately with hose may be classified as separate articles.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
5.3K import shipments a month
Singapore functions as a major regional manufacturing and logistics hub for precision fluid-handling components, with multinational manufacturers operating assembly facilities there to serve global markets. Its prominence in this heading reflects both direct production and the consolidation of components from across Southeast Asia into finished hose assemblies for export.
A hose assembly with plastic tubing and metal fittings can still classify under 391733 if the plastic tubing is the essential component and the fittings are accessories to it. However, if the metal fittings are substantial enough to give the article its essential character, or if the hose is reinforced with metal, classification may shift to 391739 or even a metal-goods heading. The specific construction and end-use should be reviewed carefully, and a CBP binding ruling is advisable for borderline cases.
Subheading 4 of 10 in heading 3917
Subheading 391733 · $42.4M of $322.0M
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ImportsExports
Imports
$42.4MYoY · free account
Exports
$19.5MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $527.7M of Flexible Plastic Tubes, Pipes & Hoses, Not Reinforced, With Fittings and exported $219.7M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Singapore and Mexico together supply 63% of it. China pays 32.4% duty; Singapore <0.1%.
customs district
destination
entry
rate provision · imports
64.3% enters free of duty; duty collected equals 5.19% of imports for consumption.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 3917330000 | Tubes, Pipes & Hoses, Not Rigid, Not Reinf, With Fit | $42.2M | 5.19% | 35.40% | $2.2M |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3917330000 | Tubes, Pipes & Hoses, Not Rigid, Not Reinf, With Fit | $19.5M |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.