Boiler Fire Tube Replacement from Japan
A replacement fire tube designed for insertion into industrial steam generating boilers to facilitate heat transfer from combustion gases to water. It falls under HTS 8402.90.00.90 as a specific part of vapor generating boilers, distinct from central heating hot water 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 boiler model via technical specs to avoid misclassification as unrelated machinery parts
• Include detailed engineering drawings and manufacturer certifications in documentation to prove it's a dedicated boiler component