C12200 Phosphor Bronze Seamless Tube
A seamless tube made from C12200 phosphor bronze, a copper-tin alloy where tin predominates over other elements per subheading note (b). Classified under HTS 7411.29.50.00 as other copper alloy tubes not specified elsewhere in the heading. Used in heat exchangers and plumbing for its corrosion resistance.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made of refined copper without alloys
Pure copper tubes (not alloys) fall under the refined copper heading, changing classification based on material purity.
If made of copper-zinc brass alloys
Brass tubes where zinc predominates over other elements (excluding nickel silvers) are classified separately from bronzes.
If imported as tube fittings or elbows rather than straight tubes
Bent, threaded, or fabricated tube fittings are classified in heading 7412, not straight pipes/tubes.
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Import Tips & Compliance
• Provide mill test certificates verifying alloy composition meets phosphor bronze definition (tin predominant, zinc <10%)
• Declare exact outer diameter and wall thickness; exceeding certain sizes may shift to other subheadings
• Avoid misclassification as brass by confirming tin content exceeds 3% and predominates over zinc
Related Products under HTS 7411.29.50.00
C70600 Copper-Nickel Seamless Pipe
Seamless pipe from C70600 90/10 copper-nickel alloy, fitting subheading note (d) with nickel predominating over other elements and zinc ≤1%. Falls under HTS 7411.29.50.00 as other copper alloy pipes for marine and desalination applications due to excellent seawater resistance.
C69430 Silicon Bronze Tube
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.
Naval Brass Tube C46400
Drawn seamless tube C46400 naval brass (60/40 Cu-Zn with 1% tin), zinc-predominant brass per note (a). HTS 7411.29.50.00 other category for propeller shafts and valve stems.
C65100 Low Silicon Bronze Pipe
Pipe from C65100 6% silicon bronze, copper-silicon base alloy in HTS 7411.29.50.00 other category. Excellent for welding and structural marine applications.
C83600 Leaded Red Brass Pipe
Continuous cast pipe C83600 leaded red brass (85/5/5/5 Cu-Zn-Sn-Pb), zinc/tin balance but classified brass per predominant zinc. HTS 7411.29.50.00 other alloys.
C92200 Steam Bronze Tube
C92200 tin bronze tube (Cu88-Sn6-Zn6-Pb), tin predominant fitting note (b). HTS 7411.29.50.00 for steam and valve applications.