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HSChapter 84
U.S. exports of mechanical stokers, grates, ash dischargers & similar appliances (HS 841630) totaled $2.7M in July 2026.
Importers of Mechanical Stokers, Grates, Ash Dischargers & Similar Appliances paid $10K in duties in July 2026 — an effective duty rate of 10% on $100K in dutiable value, based on actual customs collections rather than the published tariff schedule. Mechanical Stokers, Grates, Ash Dischargers & Similar Appliances imports of $100K in July 2026 ran 42% below the year-to-date monthly average of $173K.
Last updated: July 2026 dataMechanical stokers, traveling grates, and ash discharge systems are core components of solid-fuel combustion installations — biomass boilers, coal-fired industrial furnaces, and waste-to-energy plants among them. All imports enter under a single tariff line (8416300000), so classification disputes typically arise at the boundary with furnace parts (heading 841690) or with conveying machinery (chapter 84 elsewhere). India leads US supply under this heading, followed by China and Canada. Buyers should document the equipment's functional role within the combustion system to defend classification, particularly for integrated stoker-grate assemblies that could be argued as parts rather than complete appliances.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
7 shipments/mo
If the assembly is presented as a functional unit capable of performing the stoking and grate functions independently, it is generally classified as a complete appliance under 8416300000. Disassembled or incomplete units may be classified as parts under 841690. CBP's essential character analysis and GRI 2(a) apply; a binding ruling is advisable for complex assemblies.
Primary demand comes from biomass and waste-to-energy power plants, industrial coal-fired boilers, and cement or lime kilns that use solid fuel combustion. Retrofit projects at aging industrial facilities also generate import activity, particularly for replacement grate sections and ash handling components.
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ImportsExports
Imports
$100KYoY · Pro
Exports
$2.7MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 8416300000 | Mech Stokes,Mech Grates, Mech Ash Discharge&sim Ap | $100K | 10.00% | 100.00% | $10K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8416300000 | Mech Stokes,Mech Grates, Mech Ash Discharge&sim Ap | $2.7M |
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.
Subheading 4 of 4 in heading 8416
Subheading 841630 · $100K of $23.8M
Exports · July 2026
destination
Libya and Malaysia together take 100% of it.
customs district
origin
entry
rate provision · imports
the effective duty rate is 10.00%.