Crystal Boule Grinder
Precision grinder that shapes semiconductor crystal boules to exact diameters and grinds orientation flats, preparing them for slicing into wafers used in glass-enclosed electronic lamps and tubes. HTS 8475.10.00.00 applies as part of the assembly process for devices in glass envelopes per chapter notes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for grinding semiconductor wafers post-slicing, not boules
Wafer-specific grinding falls under Chapter 84 honing/grinding machines, outside boule prep for lamps.
If industrial semiconductor diameter grinding without lamp context
Dedicated semiconductor equipment excludes glass envelope assembly machines per statistical notes.
If used for image/test equipment component fabrication
Certain testing-related grinders classify in Chapter 90 apparatus.
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Import Tips & Compliance
• Submit engineering drawings highlighting flat-grinding for conductivity indication, linking to lamp assembly workflow
• Certify compliance with semiconductor material processing standards to prevent Chapter 90 optical grinder misclassification
Related Products under HTS 8475.10.00.00
Electronic Tube Sealing Machine
Precision equipment that fuses glass envelopes around vacuum tube electrodes and semiconductor elements under controlled atmospheres. HTS 8475.10.00.00 specifically covers such assembly machines for electronic tubes in glass envelopes.
Lamp Lead Wire Sealing Machine
Machine that seals lead wires through glass envelopes while maintaining vacuum integrity for electric lamps and tubes. Critical assembly step covered by HTS 8475.10.00.00 for glass envelope lamp assembly.
Getter Flash Assembly Unit
Equipment that installs and activates getter materials inside glass envelopes to maintain vacuum in electronic tubes and lamps. Part of the complete assembly process under HTS 8475.10.00.00.
Base Attachment Machine for Lamps
Automated machine that cements or crimps lamp bases onto sealed glass envelopes containing electronic filaments. Final assembly step for complete lamps under HTS 8475.10.00.00.
Tube Cathode Assembly Station
Workstation that assembles cathodes and grids inside glass envelopes before final sealing for electronic tubes. HTS 8475.10.00.00 covers all stages of tube assembly in glass envelopes.
LED Lamp Glass Envelope Sealer
Modern machine that hermetically seals LED chips within glass envelopes for high-reliability lamps and indicator lights. Still classified under HTS 8475.10.00.00 for assembly of electric lamps in glass envelopes.