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HSChapter 84
U.S. imports of nonelectric industrial or laboratory furnaces & ovens for heat treatment of ores, pyrites, or metals (HS 841710) totaled $12.1M in May 2026, traded with 22 countries.
Importers of Nonelectric Industrial or Laboratory Furnaces & Ovens for Heat Treatment of Ores, Pyrites, or Metals paid $621K in duties in May 2026 — an effective duty rate of 5.5% on $11.3M in dutiable value, based on actual customs collections rather than the published tariff schedule. Nonelectric Industrial or Laboratory Furnaces & Ovens for Heat Treatment of Ores, Pyrites, or Metals imports of $12.1M in May 2026 ran 98% above the year-to-date monthly average of $6.1M.
Last updated: May 2026 dataNonelectric roasting, smelting, and heat-treatment furnaces used in metallurgical and mineral processing — including rotary kilns, shaft furnaces, and reverberatory furnaces — enter under a single tariff line (8417100000). These are capital-intensive, often custom-engineered units central to primary metals production, ore beneficiation, and pyrite roasting operations. Canada leads US imports under this heading, followed by Italy and Germany, consistent with the concentration of metallurgical engineering expertise in those countries. Because these furnaces are large, project-specific installations, importers frequently use temporary importation or bonded entry procedures during commissioning.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
A rotary kiln designed for the heat treatment of ores or metals classifies under 8417100000 when it is nonelectric. Electric versions fall under heading 8514. The key classification criteria are the fuel/energy source (nonelectric) and the primary function (heat treatment of ores, pyrites, or metals rather than, say, drying or chemical processing).
Given their size and value, these furnaces are often imported under formal entry with detailed commercial invoices and engineering specifications. Temporary importation under bond (TIB) may apply for demonstration or testing units. Importers should also consider whether the furnace arrives in multiple shipments as components, which may require a ruling on whether to classify as a complete machine under GRI 2(a).
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| SPAIN | $6.0M | -- | -$6.0M |
| MEXICO | $13K | $4.0M | +$4.0M |
| JAPAN | -- | $2.5M | +$2.5M |
| KOREA, SOUTH | $2.3M | -- | -$2.3M |
| CANADA | $84K | $2.1M | +$2.0M |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8417100000 | FURV,OVEN,ROAST,MELT,TREAT,ORE,PYR,MLT,IND,LAB,N/E | $2.4M | 6.44% | $131K |
FURV,OVEN,ROAST,MELT,TREAT,ORE,PYR,MLT,IND,LAB,N/E
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8417100000 | FURV,OVEN,ROAST,MELT,TREAT,ORE,PYR,MLT,IND,LAB,N/E | $9.8M |
FURV,OVEN,ROAST,MELT,TREAT,ORE,PYR,MLT,IND,LAB,N/E
533 no
DIGITAL PROCESSING UNITS, N.E.S.O.I.
HS 847150
PARTS & ACCESSORIES FOR ADP MACHINES & UNITS
HS 847330
PORT DIGTL AUTOMATIC DATA PROCESS MACH NOT > 10 KG
HS 847130
AUTOMATIC DATA PROCESSING STORAGE UNITS, N.E.S.O.I
HS 847170
AUTOMATIC DATA PROCESSING UNITS, N.E.S.O.I.
HS 847180
TURBOJET AND TURBOPROLLER PARTS
HS 841191
| State | Imports | Exports | Balance |
|---|---|---|---|
| South Carolina | -- | $2.9M | +$2.9M |
| Michigan | -- | $2.8M | +$2.8M |
| Ohio | $559K | $1.9M | +$1.4M |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | $105K | $4.0M | +$3.9M |
| CHICAGO, IL | -- | $2.5M | +$2.5M |
| LOS ANGELES, CA | $1.0M | $847K | -$170K |