C90500 Gun Metal Pipe
C90500 gun metal (88/10 Cu-Sn-Zn) pipe where tin=10%>zinc=2%, qualifying as bronze per note (b) despite zinc presence. HTS 7411.29.50.00 other bronze pipe.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If zinc actually predominates on test
Lab analysis determines brass vs bronze; small variations change heading.
If machined into valve bodies
Finished valves classified by function regardless of material.
If stainless steel lined
Lined pipes classified by predominant material (steel).
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• ,Valve/steam service common; include service pressure ratings
• Avoid calling 'bronze' generically; specify exact composition
Related Products under HTS 7411.29.50.00
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.
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.