American Copper Heat Exchanger Tubes Finned from Canada
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 — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, 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