Czochralski Crystal Puller Pump
This pump is integral to Czochralski crystal growers used in semiconductor manufacturing to produce monocrystalline silicon boules from which wafers are sliced. It circulates molten silicon precisely during the pulling process to ensure crystal purity and uniformity. Classified under HTS 8413.81.00 as an other pump for liquids fitted for specialized semiconductor material processing.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as an integral part of a complete crystal grower machine
Pumps fitted as parts of semiconductor manufacturing machines are classified with the complete apparatus under Chapter 84 heading 8481.
If imported separately as a replacement part for crystal pullers
Parts of liquid pumps are classified in 8413.91 rather than the complete pump heading when not assembled as a functioning unit.
If fitted with precise liquid flow measuring devices for process control
Pumps with integral measuring instruments for industrial liquids may shift to Chapter 90 instruments and apparatus for measurement.
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Import Tips & Compliance
• Verify the pump's specific role in semiconductor crystal growth processes to confirm classification under statistical notes for manufacturing equipment
• Include detailed technical specs and end-use certification to avoid misclassification as general industrial pumps
• Ensure compliance with semiconductor industry standards like SEMI for documentation during customs clearance
Related Products under HTS 8413.81.00
Float Zone Melting Process Pump
Specialized liquid pump used in float zone crystal growth equipment for semiconductor materials like silicon, handling inert gases liquefied or process fluids with extreme purity requirements. It maintains zone stability during the melting process to produce high-purity monocrystalline ingots. Falls under HTS 8413.81.00 as other pumps for semiconductor wafer manufacturing preparation.
Semiconductor Wafer Grinding Coolant Pump
High-precision pump for circulating coolant fluids during crystal grinding of semiconductor boules to exact wafer diameters. Essential in wafer preparation equipment to maintain temperature control and surface flatness as per statistical note (b)(ii)(A). Classified in HTS 8413.81.00 as other pumps for semiconductor liquids.
Wafer Slicing Saw Coolant Circulation Pump
Pump designed for high-pressure coolant delivery in wafer slicing saws that cut monocrystalline semiconductor boules into thin wafers, as noted in statistical note (b)(ii)(B). Ensures clean cuts and prevents thermal damage during diamond saw operations. HTS 8413.81.00 covers these other specialized liquid pumps.
Semiconductor Wafer Lapping Fluid Pump
Precision metering pump for delivering lapping slurries and fluids in wafer preparation equipment to achieve critical flatness tolerances, per statistical note (b)(ii)(C). Used after slicing to prepare wafer surfaces for fabrication. Classifies under HTS 8413.81.00 as other liquid pumps for semiconductor processing.
Chemical Vapor Deposition Precursor Pump
Ultra-clean pump for liquid semiconductor precursors in CVD equipment used for wafer processing into devices. Handles volatile organic precursors with contamination-free delivery. HTS 8413.81.00 includes such other pumps for semiconductor manufacturing liquids.
Silicon Wafer Polishing Slurry Pump
Specialized pump circulating colloidal silica slurries for chemical-mechanical polishing (CMP) of semiconductor wafers to mirror finish required for fabrication. Critical for final surface preparation per statistical notes. Under HTS 8413.81.00 as other CMP liquid pumps.