Rod-in-Tube Optical Preform Assembler
Automated machine that inserts core rods into overclad tubes and collapses the assembly into monolithic optical fiber preforms using heat and pressure. Used for specialty fibers. Falls under HTS 8475.21.00.00 as preform manufacturing 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 glass parts welding machines
Non-fiber specific welding equipment in 8466.
If imported as multi-core fiber preforms
Finished fiber products in Chapter 70.
If semiconductor assembly machines
Similar precision assembly for chip packaging.
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Import Tips & Compliance
• Assembly precision specs (micron tolerances) required
• Differentiate from manual glassworking tools
• Cleanroom compatibility certification
Related Products under HTS 8475.21.00.00
Preform Etching Station
Automated hydrofluoric acid etching station removes surface defects from optical fiber preforms, improving fiber strength. Precise chemical dosing and rinsing. HTS 8475.21.00.00 for preform processing machinery.
Optical Preform Grinder
Precision grinder shapes ends of optical fiber preforms to exact geometry for fiber drawing process, with diamond tooling for silica glass. Maintains flatness critical for draw quality. Classified HTS 8475.21.00.00.
Integrated Preform Manufacturing Line
Complete turnkey line combining VAD deposition, sintering, dehydration, and collapsing for high-volume optical fiber preform production. PLC controlled with recipe management. HTS 8475.21.00.00 for complete optical fiber making systems.
Fluorine-Doped Preform Plasma Processor
Plasma processor dopes optical fiber preforms with fluorine using downstream microwave plasma for depressed cladding index profiles in dispersion-shifted fibers. Critical for DWDM systems. Under HTS 8475.21.00.00.
Fiber Preform Dehydration Oven
Oven removes hydroxyl impurities from soot preforms using chlorine gas at elevated temperatures, essential for low-loss optical fibers. Controlled humidity environment. Specialized under HTS 8475.21.00.00.
Czochralski Crystal Puller for Optical Fiber Preforms
This machine uses the Czochralski method to grow high-purity silica monocrystalline boules from which optical fiber preforms are sliced. It melts silica in a crucible and slowly pulls a seed crystal to form the boule under precise temperature control. Classified under HTS 8475.21.00.00 as it is specifically designed for producing preforms used in optical fiber manufacturing.