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HSChapter 85
U.S. imports of non-ceramic, non-plastic insulating fittings & insulation-lined electrical conduit (HS 854790) totaled $22.1M in July 2026, traded with 38 countries.
Importers of Non-Ceramic, Non-Plastic Insulating Fittings & Insulation-Lined Electrical Conduit paid $4.4M in duties in July 2026 — an effective duty rate of 28% on $16.0M in dutiable value, based on actual customs collections rather than the published tariff schedule. Non-Ceramic, Non-Plastic Insulating Fittings & Insulation-Lined Electrical Conduit imports of $22.1M in July 2026 ran 19% above the year-to-date monthly average of $18.6M.
Last updated: July 2026 dataElectrical conduit tubing and joints of base metal lined with insulating material — along with insulating fittings not made of ceramic or plastic — are grouped under this residual heading, which the US schedule breaks into four distinct 10-digit lines: fittings NESOI (8547900010), plain conduit tubing (8547900020), threaded conduit joints (8547900030), and other conduit joints (8547900040). The conduit lines are widely used in commercial construction, industrial wiring, and infrastructure projects where metal conduit with an internal insulating liner is required by electrical codes. Canada and Mexico are the leading suppliers, with cross-border manufacturing integration under USMCA a significant factor in supply-chain planning.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
1.8K shipments/mo
The US schedule separates insulating fittings NESOI (8547900010) from conduit tubing (8547900020), threaded conduit joints (8547900030), and other conduit joints (8547900040). The product form — fitting versus tubing versus joint — and whether joints are threaded drive the classification. Each line may carry a different duty rate, so correct product-form identification is essential before filing entry.
The heading requires that the conduit or joint be of base metal lined with insulating material; the specific type of insulating liner (rubber, plastic, etc.) does not change the heading classification. However, if the conduit is made entirely of plastic rather than metal with a liner, it would be classified elsewhere — typically in Chapter 39 or under heading 3917.
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Subheading 1 of 3 in heading 8547
Subheading 854790 · $22.1M of $45.4M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 8547900010 | Insulating Fittings for Machines NESOI | $13.4M | 15.48% | 59.88% | $2.1M |
| 8547900020 | Electrical Conduit Tubing, Lined With Insulation | $3.9M | 27.30% | 99.67% | $1.1M |
| 8547900030 | Electrical Conduit Lined With Insulation, Jnts Thd | $3.6M | 30.64% | 93.33% | $1.1M |
| 8547900040 | Electrical Conduit Joints Lined W/ Insulation, Nes | $1.2M | 14.39% | 60.00% | $166K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
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.
ImportsExports
Imports
$22.1MYoY · Pro
Exports
$18.1MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Mexico and China together supply 41% of it.
customs district
destination
entry
rate provision · imports
18.6% enters free of duty; the effective duty rate is 20.00%.