Seamless C10100 OFHC Copper Vacuum Tubing
Oxygen-free high-conductivity (OFHC) C10100 seamless refined copper tubing for high-vacuum systems in semiconductors. HTS 7411.10.10 covers these seamless refined copper pipes per Chapter 74 notes. Minimal impurities ensure ultra-high vacuum performance.
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More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded OFHC copper construction
Welded versions remain refined copper but move to 'other' subheading 7411.10.50.
If insulated for electrical applications
Copper tubing insulated with plastics for wiring shifts to Chapter 85 insulated wire heading.
If precision-machined for vacuum valves
Finished valve components from copper tubes classify as machinery parts in 8481.
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Import Tips & Compliance
• Provide oxygen content analysis confirming OFHC status; cleanroom packaging documentation required
• Pitfall: classifying annealed vacuum tubing as 'worked' under 7412
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