High-Purity Silica Crucible Puller
Machine pulls optical quality silica boules from high-purity quartz crucibles using precise rotation and translation for preform slicing. Electric heating elements maintain stable melt. HTS 8475.21.00.00 classification for optical fiber production equipment.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If general crystal pulling apparatus
Molding machines if not glass-specific.
If quartz crucibles imported separately
Laboratory glassware classification.
If solar silicon ingot furnaces
Different purity/process for photovoltaic silicon.
Not sure which classification is right?
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Import Tips & Compliance
• Crucible material purity specs (>99.999%) documentation essential
• Distinguish from semiconductor CZ pullers (statistical notes)
• Rotation speed control system details
Related Products under HTS 8475.21.00.00
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