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HSChapter 85
U.S. imports of non-ceramic, non-plastic insulating fittings & insulation-lined electrical conduit (HS 854790) totaled $17.3M in April 2026, traded with 33 countries.
Importers of Non-Ceramic, Non-Plastic Insulating Fittings & Insulation-Lined Electrical Conduit paid $3.6M in duties in April 2026 — an effective duty rate of 30% on $12.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 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.
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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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $3.3M | $6.2M | +$3.0M |
| CANADA | $2.8M | $860K | -$2.0M |
| KOREA, SOUTH | $1.7M | $1.7M | -$41K |
| TRINIDAD AND TOBAGO | -- | $3.1M | +$3.1M |
| CHINA | $2.6M | $445K | -$2.1M |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8547900010 | INSULATING FITTINGS FOR MACHINES NESOI | $12.3M | 29.26% | $2.2M |
| 8547900030 | ELECTRICAL CONDUIT LINED WITH INSULATION, JNTS THD | $2.2M | 31.13% | $605K |
| 8547900020 | ELECTRICAL CONDUIT TUBING, LINED WITH INSULATION | $1.7M | 27.54% | $450K |
| 8547900040 | ELECTRICAL CONDUIT JOINTS LINED W/ INSULATION, NES | $1.1M | 35.25% | $368K |
INSULATING FITTINGS FOR MACHINES NESOI
ELECTRICAL CONDUIT LINED WITH INSULATION, JNTS THD
ELECTRICAL CONDUIT TUBING, LINED WITH INSULATION
ELECTRICAL CONDUIT JOINTS LINED W/ INSULATION, NES
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8547900010 | INSULATING FITTINGS FOR MACHINES NESOI | $8.1M |
| 8547900040 | ELECTRICAL CONDUIT JOINTS LINED W/ INSULATION, NES | $7.3M |
| 8547900020 | ELECTRICAL CONDUIT TUBING, LINED WITH INSULATION | $2.2M |
| 8547900030 | ELECTRICAL CONDUIT LINED WITH INSULATION, JNTS THD | $1.1M |
INSULATING FITTINGS FOR MACHINES NESOI
341.7K no
ELECTRICAL CONDUIT JOINTS LINED W/ INSULATION, NES
168.5K kg
ELECTRICAL CONDUIT TUBING, LINED WITH INSULATION
105.6K kg
ELECTRICAL CONDUIT LINED WITH INSULATION, JNTS THD
54.7K kg
MACH FOR RECP/CONVR/TRANS/REGN OF VOICE/IMAGE/DATA
HS 851762
SOLID-STATE NON-VOL SEMICONDUCTOR STORAGE DEVICES
HS 852351
SMARTPHONES
HS 851713
PROCESSORS AND CONTROLLERS, ELECTRONIC INTEG CIRCT
HS 854231
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V
HS 853710
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $3.9M | $6.6M | +$2.7M |
| Texas | $3.5M | $3.3M | -$174K |
| Louisiana | $302K | $3.1M | +$2.8M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAN FRANCISCO INTERNATIONAL AIRPORT, CA | $2.0M | $5.2M | +$3.2M |
| LAREDO, TX | $2.1M | $2.0M | -$138K |
| YSLETA, TX | $1.7M | $2.1M | +$381K |