American Copper Heat Exchanger Tubes Finned from Japan
Copper tubes extruded in US facilities, exported for high-fin rotary finning operations creating extended surface area, returned for heat exchanger core assembly. The finning dramatically increases heat transfer surface. HTS 9802.00.60.00 covers US copper further processed.
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
• Document finning machine specifications, fin density, and tube wall thickness reductions
• Provide US extrusion process records and copper alloy chemistry
• Include fin bond integrity and heat transfer performance test data