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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If specifically for chemical TMP processes
Chemical wood pulp treatment parts have statistical separation.
If imported as saw blades or metal cutting tools
Discs resembling saws classify under Chapter 82 tools if not machinery-specific.
If precision-molded as metal molds or dies
Stock treatment patterns may resemble molding dies in 8480.
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
• Include hardness testing certificates (Rockwell/Brinell) for wear parts validation
• Segmented design requires packing lists showing complete disc assembly requirements
Related Products under HTS 8439.91.10.00
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.
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.