Silicon Carbide Thermocouple Tube from Japan
Hexagonal silicon carbide tube sheathing thermocouples in kilns and furnaces up to 1600°C. HTS 6903.90.00.50 covers this refractory ceramic tube, fired from nonmetallic carbides, excluding electrical insulators. Essential for industrial heat measurement protection.
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
• Certify SiC composition >90% with firing certificates; distinguish from graphite tubes via material specs; bundle with furnace documentation to prevent parts classification