Crystal Boule Cooling Zone Heat Exchanger
This heat exchanger controls the cooling gradient in the post-growth zone of semiconductor crystal pullers, preventing thermal stress in silicon boules. Classified in HTS 8402.90.0010 for vapor boiler systems in wafer manufacturing equipment.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for non-boiler based semiconductor cooling systems
General machinery cooling units classify separately from boiler heat exchangers.
If designed for central heating hot water boilers
Exclusions in Chapter 84 notes redirect to parts of excluded boiler types.
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
• Provide thermal modeling data showing critical cooling rate specifications
• Ensure cleanroom compatibility certification for wafer fab imports
• Separate from shipping containers to avoid 'set' classification issues
Related Products under HTS 8402.90.00.10
Czochralski Crystal Puller Heat Exchanger
This heat exchanger is a critical part of Czochralski crystal growers used in semiconductor wafer manufacturing to control the temperature of the melt during monocrystalline silicon boule pulling. It falls under HTS 8402.90.0010 as a heat exchanger component for vapor generating boilers in semiconductor processing equipment.
Float Zone Crystal Grower Heat Exchanger
Designed for float zone method crystal growers, this heat exchanger manages RF heating zone temperatures in semiconductor boule production from polysilicon feedstock. Classified under HTS 8402.90.0010 for its role in super-heated vapor systems of these specialized boilers.
Silicon Wafer Processing Boiler Heat Exchanger
Heat exchanger for boilers in silicon wafer growth systems, precisely controlling vapor temperatures during monocrystalline boule formation for semiconductor fabrication. HTS 8402.90.0010 applies as parts of vapor generating boilers per statistical notes for semiconductor equipment.
Gallium Arsenide Crystal Puller Heat Exchanger
Specialized heat exchanger for compound semiconductor (GaAs) crystal pullers using Czochralski method, managing high-temperature vapor flows in the growth chamber. Falls under 8402.90.0010 as boiler parts for semiconductor material processing equipment.