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HSChapter 84
U.S. imports of parts for pulp-making machinery (HS 843991) totaled $11.2M in April 2026, traded with 33 countries.
Importers of Parts for Pulp-Making Machinery paid $645K in duties in April 2026 — an effective duty rate of 12% on $5.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Parts for Pulp-Making Machinery imports of $11.2M in April 2026 ran 16% above the year-to-date monthly average of $9.6M.
Last updated: April 2026 dataCanada leads US imports of parts for pulp-making machinery, followed by Germany and Sweden — a supplier mix that reflects both North American mill proximity and European OEM aftermarket networks. The US tariff schedule subdivides this heading into specialized wear parts such as bed plates, roll bars, and other stock-treating components (8439911000) and all other parts not elsewhere specified (8439919000), a distinction that matters because stock-treating parts experience high wear rates and drive recurring import activity independent of new machine installations. Importers should ensure parts are matched to the correct parent machine heading, as parts for paper-making or finishing machinery are classified separately under heading 843999.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Stock-treating parts are components that directly contact and process the fiber slurry in pulp refining — including refiner plates, roll bars, and bed plates subject to continuous abrasive wear. The residual line (8439919000) covers all other parts of pulp-making machinery that do not fall within that specific wear-part definition. OEM part numbers and technical specifications are the primary evidence for distinguishing the two lines.
Parts for pulp-making machinery (843991) and parts for paper-making or finishing machinery (843999) are classified under different headings and tariff lines. A mixed shipment must be itemized on the entry with each part assigned to its correct heading based on the machine it is designed to serve. Combining them under a single line risks misclassification and potential CBP penalties.
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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 |
|---|---|---|---|---|
| 8439919000 | PARTS OF MACH FOR MAKE PULP OF FIB CELL MAT,NESOI | $8.5M | 10.84% | $406K |
| 8439911000 | BED PLATE, ROLL BARS & OTHER STOCK-TREATING PARTS | $2.6M | 16.86% | $238K |
PARTS OF MACH FOR MAKE PULP OF FIB CELL MAT,NESOI
BED PLATE, ROLL BARS & OTHER STOCK-TREATING PARTS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8439910000 | PARTS OF MACH F MAKE PULP OF FIBR CELLULOSIC MATL | $7.6M |
PARTS OF MACH F MAKE PULP OF FIBR CELLULOSIC MATL
6.5K 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 |
|---|---|---|---|
| Pennsylvania | $224K | $3.8M | +$3.6M |
| Alabama | $2.8M | $167K | -$2.7M |
| Wisconsin | $1.3M | $1.3M | -$23K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHAMPLAIN-ROUSES POINT, NY | $3.0M | $743K | -$2.2M |
| PORT HURON, MI | $1.9M | $617K | -$1.3M |
| PHILADELPHIA INTERNATIONAL AIRPORT, PA | -- | $1.3M | +$1.3M |