Synthetic Fused Quartz Process Gas Tubes from Japan
Unworked synthetic fused silica tubes for delivering process gases in semiconductor and solar cell manufacturing. Flame-polished ends acceptable if pre-annealing per chapter notes. HTS 7002.31.00.00 covers these unworked tubes.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Specify electric fusion process vs flame fusion for synthetic quartz verification
• Particle contamination specs (<10 particles >0.5μm) prove clean process suitability
• Bulk packaged lengths ok; cut-to-length service voids unworked status