Cast Iron Boiler Heat Exchanger from Japan
A cast iron heat exchanger designed specifically as a replacement part for central heating boilers not of heading 8402. It facilitates the transfer of heat from combustion gases to water in the boiler system. Classified under HTS 8403.90.00.00 as a dedicated part of central heating boilers.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Verify compatibility with specific boiler models via manufacturer specs to avoid misclassification; ensure material composition documentation for cast iron content; obtain boiler part certification if required by local codes