Of machinery and plant for making paper pulp, paper or paperboard
Machinery, plant or laboratory equipment, whether or not electrically heated (excluding furnaces, ovens and other equipment of heading 8514), for the treatment of materials by a process involving a change of temperature such as heating, cooking, roasting, distilling, rectifying, sterilizing, pasteurizing, steaming, drying, evaporating, vaporizing, condensing or cooling, other than machinery or plant of a kind used for domestic purposes; instantaneous or storage water heaters, nonelectric; parts thereof: > Parts: > Of machinery and plant for making paper pulp, paper or paperboard
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.05, 9903.88.06, 9903.88.07, 9903.88.08, 9903.88.10, 9903.88.11, 9903.88.14, 9903.88.19, 9903.88.50, 9903.88.52, 9903.88.58, 9903.88.60, 9903.88.62, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(a) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(b) [to this subchapter]
Products classified under HTS 8419.90.20.00
Paper Pulp Digester Parts Kit
Replacement parts kit for continuous pulp digesters used in the kraft process to cook wood chips into paper pulp under high temperature and pressure. These parts include pressure seals, valves, and heating elements specifically designed for pulp-making machinery. Classified under 8419.90.20.00 as parts of machinery for making paper pulp involving heating and cooking processes.
Kraft Pulp Process Valve Assembly
High-temperature control valve assembly for regulating steam and chemical flow in paper pulp digesters during the cooking phase. Engineered to withstand corrosive pulping liquors and elevated temperatures in paper pulp production lines. Falls under 8419.90.20.00 due to its role in temperature-change processes for paper pulp making.
Paper Machine Headbox Heating Element
Electric heating elements for maintaining optimal slurry temperature in the headbox of paperboard manufacturing machines. Ensures consistent paper formation by controlling temperature during the web-forming process. Recognized under 8419.90.20.00 for parts of paper/paperboard making equipment involving heating.
Pulp Washing Press Steam Valve
Steam control valves for pulp washing presses that heat and squeeze pulp mats to remove spent cooking liquors in paper pulp production. Designed for high-pressure, high-temperature operation specific to pulp processing lines. Covered by 8419.90.20.00 as parts for pulp-making machinery with steaming/heating functions.
Paperboard Dryer Cylinder Shell
Cast iron shell replacement for steam-heated dryer cylinders in paperboard machines, where hot steam evaporates moisture from wet paper webs. Critical component for the drying phase involving temperature change in paperboard production. Classifies under 8419.90.20.00 for paperboard making machinery parts.
Continuous Pulp Cooker Jacket Panels
Insulated jacket panels for continuous pulp cookers that maintain cooking temperatures during wood-to-pulp conversion. Facilitates the heating process essential for breaking down lignocellulose in paper pulp manufacturing. Included in 8419.90.20.00 as parts of pulp-making plant.
Headbox Dilution Heater Assembly
Heater assemblies for diluting stock in paper machine headboxes, ensuring uniform temperature for consistent paper quality during formation. Integral to the temperature-controlled slurry delivery in paper production. Falls under 8419.90.20.00 for paper making machinery parts.
Pulp Bleach Tower Heating Coils
Titanium heating coils for maintaining reaction temperatures in multi-stage pulp bleaching towers during paper pulp brightening. Withstands harsh chemical environments and high temperatures in pulp processing. Classified in 8419.90.20.00 as pulp-making machinery parts involving heating.
Yankee Dryer Steam Joint
Rotary steam joints for supplying steam to Yankee dryer cylinders in tissue paper production, enabling high-speed drying via evaporation. Precision-engineered for paper machine rotation and temperature maintenance. Under 8419.90.20.00 for paper drying equipment parts.
Paper Pulp Evaporator Heat Exchanger
Plate heat exchangers for concentrating black liquor in pulp evaporators by transferring heat for water evaporation. Critical for energy recovery in paper pulp mills involving temperature change processes. Fits 8419.90.20.00 as pulp-making plant parts.
Fourdrinier Paper Machine Steam Box
Steam boxes mounted on Fourdrinier wire sections to heat the forming fabric and enhance water removal via evaporation in paper sheet formation. Temperature-controlled component for continuous paper production. Classed under 8419.90.20.00 for paper making machinery.
Kraft Recovery Boiler Economizer Tubes
Economizer tube bundles for preheating feedwater using waste heat in kraft pulp recovery boilers, part of the pulp production energy cycle involving temperature processes. Specific to paper pulp mill operations. Included in 8419.90.20.00 as pulp-making parts.
Paperboard Calender Steam Chest
Steam chests for heating calender rolls in paperboard finishing lines, controlling roll temperature for sheet glazing and density. Involves temperature regulation in paperboard manufacturing. Under 8419.90.20.00 for paperboard plant parts.
Pulp Refiner Heating Jacket
Heating jackets for double-disc pulp refiners that maintain stock temperature during mechanical fiber development for paper pulp. Ensures optimal refining conditions via controlled heating. Fits 8419.90.20.00 as parts for pulp processing involving temperature change.
Stock Chest Agitator Heater
Immersion heaters for stock chests holding paper pulp slurry between processing stages, preventing temperature drops and maintaining consistency. Essential for temperature-controlled pulp handling in paper production. Classified under 8419.90.20.00 for pulp-making equipment.