Brass Heat Exchanger Tubing 5/8 Inch
5/8-inch admiralty brass tube (C44300) with arsenic for heat exchangers in boilers/condensers. Under HTS 7411.21.50.00 as other copper-zinc base alloy tubes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If nickel ≥5% for marine exchangers
Nickel silver alloys for seawater use per note (c).
If as heat exchanger parts
Functional end-use in machinery under Chapter 84.
If finned or reservoirs attached
Added features make it tank/reservoir, not plain tube.
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
• Certify dezincification resistance (ASTM B111); critical for heat exchanger approval
• U-tube bundles may classify differently if assembled
Related Products under HTS 7411.21.50.00
Brass Plumbing Pipe 1/2 Inch
A 1/2-inch diameter seamless brass pipe made from copper-zinc base alloy (brass) used for potable water supply lines in residential plumbing. It falls under HTS 7411.21.50.00 as 'other' copper-zinc base alloy tubes not specified elsewhere in the subheading, meeting the definition where zinc predominates over other elements with less than 5% nickel.
Brass Refrigeration Tubing 3/8 Inch
3/8-inch OD annealed brass tubing from copper-zinc alloy used in HVAC and refrigeration systems for refrigerant lines. Classified under HTS 7411.21.50.00 as 'other' brass tubes, with zinc as the predominant alloying element per chapter definitions.
Brass Hydraulic Line Tubing 1 Inch
Heavy-duty 1-inch brass tube from copper-zinc base alloy for hydraulic fluid lines in machinery. HTS 7411.21.50.00 applies to these 'other' brass pipes not qualifying for precision or specific diameter exclusions.
Brass Gas Distribution Pipe 3/4 Inch
3/4-inch brass pipe from copper-zinc alloy for natural gas distribution lines in buildings. Falls under 7411.21.50.00 as other brass tubes, zinc-dominant per subheading note (a).
Brass Instrument Tubing 5/16 Inch
5/16-inch drawn brass tubing from copper-zinc base alloy used to fabricate musical instrument components like trumpet valves. HTS 7411.21.50.00 covers these other brass tubes.
Brass Condenser Coil Tubing 1/4 Inch
1/4-inch capillary brass tubing coiled for refrigeration condenser coils, copper-zinc alloy. HTS 7411.21.50.00 for other brass tubes.