Boiler Draft Fan Impeller
Precision-balanced rotor blades for forced draft or induced draft fans supporting combustion air/flue gas movement in boiler auxiliary systems. While fan assemblies may classify elsewhere, impellers as replacement parts fall under HTS 8404.90.00.00. Critical for airflow optimization.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If parts of industrial fans
Fan impellers primarily classify under fan heading 8414, unless proven integral to boiler auxiliary.
If turbocharger impellers
High-speed rotating elements for gas compression shift based on prime mover.
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Import Tips & Compliance
• Dynamic balance certificates mandatory; imbalance causes operational failures
• Blade material (e.g
• abrasion-resistant alloys) affects tariff treatment
• Complete fan assemblies classify differently; declare as 'impeller only'
Related Products under HTS 8404.90.00.00
Economizer Tube Bundle
A heat exchanger assembly consisting of finned tubes designed to recover waste heat from flue gases in boiler systems, preheating feedwater to improve efficiency. It is classified under HTS 8404.90.00.00 as a part of auxiliary plant for boilers of headings 8402 or 8403. This component enhances overall thermal performance in steam power units.
Superheater Coil Assembly
Coiled high-temperature alloy tubes that superheat saturated steam from boilers to increase energy content and efficiency in power generation. Classified as parts under HTS 8404.90.00.00 for auxiliary plant used with boilers of 8402 or 8403. Essential for turbine performance in steam power units.
Soot Blower Element
Retractable lance or rotary assembly with nozzles that inject steam or air to dislodge soot from boiler tubes, maintaining heat transfer efficiency. Falls under HTS 8404.90.00.00 as parts of auxiliary plant like soot removers for 8402/8403 boilers. Critical for preventing efficiency loss in fossil fuel plants.
Condenser Tube Sheet
Thick forged plate with precision-drilled holes to hold condenser tubes in steam power units, facilitating heat exchange for vapor condensation. Classified under HTS 8404.90.00.00 as parts of condensers for vapor power units. Used in nuclear and fossil power plants for efficiency.
Gas Recoverer Baffle Assembly
Perforated steel baffles directing flue gas flow through heat recovery surfaces in boiler auxiliary systems, maximizing energy extraction. Under HTS 8404.90.00.00 as parts of gas recoverers for 8402/8403 boilers. Improves waste heat utilization in industrial plants.
Steam Condenser Shell Section
Cylindrical pressure vessel section housing tube bundles in surface condensers for steam power units, designed to withstand vacuum conditions. HTS 8404.90.00.00 covers it as parts of condensers. Vital for Rankine cycle efficiency.