Single-Side Wafer Lapper
Single-side wafer lappers use loose abrasive slurries to achieve precise wafer thickness and flatness on one surface simultaneously. Essential for preparing wafers before final polishing. HTS 8442.30.0150 covers this as other preparation apparatus.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If lapping/polishing machines for semiconductor wafers
Directly provided for in statistical notes under 8460 for wafer preparation equipment.
If primarily centrifugal liquid handling equipment
Centrifugal apparatus for material processing classified by primary function.
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Import Tips & Compliance
• Specify lapping plate materials (tin, copper) and slurry composition in technical specs
• Include flatness specification capabilities (TTV <1μm)
• Document pressure control systems for uniform material removal
Related Products under HTS 8442.30.01.50
Czochralski Crystal Puller
A Czochralski crystal puller is specialized machinery used to produce extremely pure monocrystalline silicon boules by pulling a seed crystal from molten silicon. These boules are then sliced into wafers for semiconductor fabrication. Classified under HTS 8442.30.0150 as other machinery for preparing printing components, though primarily serving semiconductor boule preparation analogous to printing plate production.
Float Zone Crystal Furnace
Float zone crystal furnaces use the float zone method to produce high-purity monocrystalline semiconductor boules without crucibles, ideal for silicon and gallium arsenide. The apparatus melts and recrystallizes a narrow zone along the boule. Falls under HTS 8442.30.0150 as other equipment for preparing printing components, with application to semiconductor wafer precursors.
Crystal Boule Grinder
Crystal boule grinders precisely grind semiconductor boules to exact diameters and create flats indicating conductivity type and resistivity. This preparation step ensures wafers sliced from the boule meet semiconductor specifications. Classified in HTS 8442.30.0150 as other machinery for preparing printing plates or components.
Semiconductor Wafer Slicing Saw
High-precision wafer slicing saws cut ultra-thin wafers from monocrystalline semiconductor boules using diamond-impregnated blades. They maintain wafer flatness and minimize subsurface damage critical for device fabrication. Under HTS 8442.30.0150 as other apparatus for preparing printing components.
Wafer Edge Grinder
Wafer edge grinders profile the circular edges of semiconductor wafers to precise geometries, preventing chipping and enabling handling equipment compatibility. Critical for wafer transport in fabs. Classified HTS 8442.30.0150 as other printing component preparation equipment.
Double-Side Wafer Polisher
Double-side wafer polishers simultaneously polish both wafer surfaces between rotating pads using chemical-mechanical planarization (CMP) slurries. Achieves mirror finish required for device fabrication. Under HTS 8442.30.0150 as other polishing equipment.