Cupro-Nickel Seamless Pipe 90/10
A seamless pipe made from 90% copper and 10% nickel (cupro-nickel alloy), used primarily in marine and desalination applications for its excellent corrosion resistance in seawater. This falls under HTS 7411.22.00.00 as it is a copper-nickel base alloy tube per subheading note (d), with nickel predominating over other elements and zinc under 1%.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If zinc content exceeds 1% by weight
Excess zinc disqualifies it from copper-nickel base alloys, shifting to other copper alloys like brasses.
If made of refined copper without significant nickel
Pure or low-alloy copper tubes fall under non-alloy copper headings, not alloy-specific subheadings.
If produced as steel pipe with cupro-nickel cladding
Clad or lined steel pipes are classified by steel base material in Chapter 73, not pure copper tubes.
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Import Tips & Compliance
• Verify alloy composition certificate showing Cu-Ni ratio and zinc <1% to confirm classification under copper-nickel base alloys
• Provide mill test reports for seamless construction; welded versions may shift to other subheadings
Related Products under HTS 7411.22.00.00
Cupro-Nickel 70/30 Instrumentation Tubing
Precision-drawn tubing from 70/30 cupro-nickel alloy, used in chemical processing plants for instrumentation lines due to high resistance to corrosive fluids. This product is covered by HTS 7411.22.00.00 as a copper-nickel base alloy tube with no significant zinc content.
Cupro-Nickel Desalination Plant Pipe
Large-diameter pipe for reverse osmosis desalination plants, leveraging cupro-nickel’s resistance to chloride pitting. Covered by HTS 7411.22.00.00 as copper-nickel base alloy tube per note (d).
Nickel-Silver Condenser Tube
A thin-walled tube of nickel-silver (copper-nickel-zinc alloy with ≥5% Ni), designed for heat exchangers and condensers in industrial cooling systems. Classified under HTS 7411.22.00.00 per subheading note (c) for copper-nickel-zinc base alloys where nickel is at least 5% by weight.
Nickel-Silver Decorative Pipe
Polished nickel-silver pipe used in architectural fixtures and luxury furniture legs for its silver-like appearance and durability. Falls under HTS 7411.22.00.00 as copper-nickel-zinc base alloy per note (c), distinguished from functional tubes by end-use but same material classification.
Cupro-Nickel Heat Exchanger Tubing
Finned or straight tubing from cupro-nickel alloy for HVAC and power plant heat exchangers, offering superior thermal conductivity and erosion resistance. Classified in HTS 7411.22.00.00 under copper-nickel base alloys as defined in subheading note (d).
Nickel-Silver Marine Exhaust Pipe
Corrosion-resistant pipe for boat exhaust systems made from nickel-silver alloy, handling high temperatures and saltwater exposure. HTS 7411.22.00.00 applies due to copper-nickel-zinc composition meeting note (c) criteria.