U.S. exports of Plastic Fittings for Tubes, Pipes & Hoses (HS 391740) totaled $84.7M in August 2026.
Importers of Plastic Fittings for Tubes, Pipes & Hoses paid $8.7M in duties in August 2026, an average duty rate of 13.43% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataPlastic pipe fittings — couplings, elbows, tees, adapters, and similar connectors — are widely traded components for plumbing, automotive brake systems, and industrial fluid networks, with the US schedule subdividing them across eight 10-digit lines by application and resin type. Dedicated lines cover vehicle brake-hose fittings (3917400010), non-pressure-rated plumbing fittings in PVC (3917400020), ABS (3917400030), and other plastics (3917400050), pressure-rated plumbing fittings in PVC (3917400060) and other materials (3917400080), and a general residual line (3917400095). Canada and Mexico lead US supply, with China also a major source where Section 301 tariffs may apply. The breadth of end-use applications — from residential plumbing to automotive safety systems — means that product-specific standards (ASTM, SAE, NSF) often govern admissibility at the project or OEM level even after customs clearance.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
13.5K import shipments a month
The US schedule provides a dedicated 10-digit line (3917400010) for fittings for vehicle brake hoses, which takes precedence over the general plumbing-fitting lines. Importers should retain technical documentation from the manufacturer confirming the fitting's intended use in brake-hose assemblies. Misclassifying brake-hose fittings as general plumbing fittings can result in underpayment of duties if the applicable rates differ.
Non-pressure-rated plumbing fittings (lines 3917400020, 3917400030, 3917400050) are designed for drain, waste, and vent (DWV) applications where the pipe operates at or near atmospheric pressure. Pressure-rated fittings (lines 3917400060 and 3917400080) are engineered to withstand internal fluid pressure and are used in supply-side plumbing. The distinction is typically established by the applicable ASTM standard marked on the fitting — for example, ASTM D2665 for DWV versus ASTM D2466 for pressure service — and should be documented at entry.
Subheading 2 of 10 in heading 3917
Subheading 391740 · $84.7M of $359.1M
ImportsExports
Imports
$64.6MYoY · free account
Exports
$84.7MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $674.8M of Plastic Fittings for Tubes, Pipes & Hoses and exported $994.1M.
Through August 2026. Source: U.S. Census Bureau.
Exports · August 2026
destination
Mexico and Canada together take 51% of it.
customs district
origin
entry
rate provision · imports
20.9% enters free of duty; duty collected equals 13.43% 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 |
|---|---|---|---|---|---|
| 3917400095 | Other Fittings for Tubes, Pipes & Hoses, of Plastic | $48.1M | 13.33% | 83.16% | $6.4M |
| 3917400080 | Oth Plumbing Fittings for Tubes, Pipes & Hoses, Nes | $6.3M | 13.79% | 75.72% | $863K |
| 3917400020 | Plmbng Ftng Tube, Pipe, Hose, of Plast, Nt Pr Rtd, PVC | $3.7M | 13.73% | 61.18% | $513K |
| 3917400050 | Plmbng Ftng Tubes, Pipes, Hoses, Plast, Nt Prrtd, Nes | $3.4M | 10.38% | 66.18% | $352K |
| 3917400060 | Oth Plumbing Fittings Tubes, Pipes Hoses, Polyv Chl | $1.9M | 21.34% | 75.66% | $414K |
| 3917400030 | Plumbing Ftng Tube, Pipe, Hoses, Plas, Nt Pres Rtd, Abs | $1.2M | 9.84% | 34.62% | $117K |
| 3917400010 | Fittings for Vehicle Brake Hoses | $79K | 23.55% | 91.58% | $19K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 3917400000 | Fittings for Tubes, Pipes & Hoses, of Plastic | $84.7M |
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.
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