C69430 Silicon Bronze Tube from Mexico
Condenser tube of C69430 silicon bronze, copper-silicon alloy classified under 'other' copper alloys in HTS 7411.29.50.00. Meets bronze definition indirectly through chapter notes; used in marine cooling systems.
Duty Rate — Mexico → United States
13%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Provide UNS designation and heat analysis; silicon bronzes often need special customs review
• Ensure tubes meet ASTM B96 specs for proper Schedule B/HTS matching
• Avoid declaring as 'copper tube' generically; specify alloy to prevent duty evasion claims