Chip Feeder Screw Conveyor

Robust screw conveyor section for feeding wood chips into pulp digesters at controlled rates. It is a part of machinery for making pulp of fibrous cellulosic material, under HTS 8439.91.90.00. Ensures consistent chip metering for optimal digestion.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+35.0%35%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8439.99Lower: 10% vs 35%

If for paper stock preparation conveyors

Conveyors for paper-making processes (post-pulp) are under general parts.

8436.80.00Same rate: 35%

If used in other bulk material handling

Other machinery for material handling shifts if not pulp-dedicated.

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Import Tips & Compliance

Document integration with specific digester models; check for variable pitch specs; avoid bulk classification as agricultural conveyors

Related Products under HTS 8439.91.90.00

Pulp Press Roll Segment

Segmented roll covering for pulp presses that squeeze water from pulp before drying. Classified in HTS 8439.91.90.00 as part for pulp-making from cellulosic materials. Provides high-nip pressure for efficient dewatering.

Continuous Digester Feed Valve Actuator

Pneumatic actuator for feed valves in continuous pulp digesters controlling chip/liquor flow. HTS 8439.91.90.00 part for pulp-making machinery of fibrous cellulosic material. Ensures precise process control in high-volume production.

Pulp Screener Basket

Cylindrical slotted basket for pulp screening equipment that removes shives and debris from pulp stock. HTS 8439.91.90.00 as part for machinery making pulp of fibrous cellulosic materials. Precision slots ensure clean pulp for papermaking.

Digester Peeler Blade

Specialized blade for batch digester peelers that remove spent chips from vessel walls post-cook. Part of pulp-making machinery, HTS 8439.91.90.00 for fibrous cellulosic pulp processes. Extends digester life by thorough cleaning.

Recovery Boiler Liquor Nozzle

Black liquor spray nozzle for kraft pulp recovery boilers that burn spent cooking liquor to recover chemicals. While boiler-focused, classified as part of pulp-making machinery under HTS 8439.91.90.00 due to integral role in chemical pulping cycle.

Pulp Digester Agitator Blade

A heavy-duty stainless steel blade designed for installation in pulp digesters to mix and circulate wood chips during the chemical pulping process. It falls under HTS 8439.91.90.00 as a part specifically for machinery used in making pulp from fibrous cellulosic materials, such as kraft digesters. The blade ensures uniform cooking and prevents material buildup.