Wafer Lapping Machine Conditioning Ring
Cast iron or composite conditioning ring for wafer lappers (8426.30) that dresses the lapping plate surface for flatness control in semiconductor wafer preparation. Specific to machinery in 8426.11/19/30 subheadings, hence 8431.49.1010.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If cast iron construction sold generically
Other cast iron articles not parts of specific machinery classify under Chapter 73.
If use in non-semiconductor lapping/polishing equipment
Parts for general 8426 machines outside statistical note scope go to other categories.
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Import Tips & Compliance
• Document ring groove patterns matching specific lapping machine models
• Avoid bulk import confusion with general machine shop rings under 8431.49.90
• Require material safety data for cast iron to meet REACH compliance
Related Products under HTS 8431.49.10.10
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Rotating graphite or molybdenum chuck that precisely grips silicon seed crystal during Czochralski pulling in 8426.11 pullers. Critical growth interface part for 8431.49.1010.
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Radio frequency induction coil for float zone crystal growers (8426.11) that melts silicon rods without crucibles to produce high-purity monocrystalline ingots for wafers. Classified in 8431.49.1010 as a principal part dedicated to semiconductor processing equipment.
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Custom precision fixture that holds crystal boules for grinding orientation flats indicating conductivity type in 8426.30 equipment. Semiconductor-specific part for 8431.49.1010 classification.
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