Pulp Refiner Roll Bar
Stainless steel roll bar used in pulp refiners to mechanically treat and fibrillate cellulosic stock for improved paper quality. Classified under HTS 8439.91.10.00 as a stock-treating part for fibrous cellulosic pulp machinery.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for treating chemical wood pulp specifically
Statistical breakout exists for parts dedicated to chemical pulp processes vs mechanical.
If used in general paper making machinery, not pulp-specific
Other parts of pulp or paper machinery fall under 8439.99 if not stock-treating specific.
If imported as unfinished steel fabrications
Unmachined steel articles for machinery may classify under Chapter 73 as semi-finished products.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Label with precise dimensions and material composition (e.g
• SS316) to meet metallurgical documentation requirements
• Obtain supplier declaration confirming use in pulp stock preparation, not finishing stages
• Avoid pitfalls by distinguishing from grooved rolls for paper calendering, which go elsewhere
Related Products under HTS 8439.91.10.00
Paper Pulp Bed Plate
A heavy-duty cast iron bed plate designed for use in paper pulp refining machinery, providing a stable surface for stock treatment during the pulping process. It falls under HTS 8439.91.10.00 as a stock-treating part specifically for machinery making pulp from fibrous cellulosic materials.
Kraft Pulp Stock Chest Agitator Blade
Replaceable agitator blade for maintaining uniform consistency in kraft pulp stock chests during pulp preparation. HTS 8439.91.10.00 covers this as a stock-treating component for cellulosic pulp machinery.
Mechanical Pulp Deflaker Rotor
Hardened steel rotor assembly for deflakers that break down fiber bundles in mechanical pulp stock treatment. Falls under HTS 8439.91.10.00 for pulp machinery stock-treating parts.
Sulfate Pulp Jordan Refiner Plug
Precision-machined plug insert for Jordan conical refiners used in sulfate pulp stock fibrillation. Classified in HTS 8439.91.10.00 as stock-treating part for cellulosic pulp production.
Cellulosic Stock Cleaner Hydrocyclone Liner
Wear-resistant polyurethane liner for hydrocyclone pulp cleaners that remove heavy contaminants from stock. HTS 8439.91.10.00 for pulp machinery stock-treating components.
TMP Pulp Double-Disc Refiner Disc Segment
Segmented alloy steel discs for thermomechanical pulp (TMP) double-disc refiners treating wood chips into pulp stock. Under HTS 8439.91.10.00 as stock-treating pulp parts.