Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel-silver)
Copper tubes and pipes: > Of copper alloys: > Of copper-nickel base alloys (cupro-nickel) or copper-nickel-zinc base alloys (nickel-silver)
Duty Rate (from China)
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
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified 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).
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%.
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.
Nickel-Silver Hydraulic Tubing
High-pressure tubing for hydraulic systems in aerospace applications, made from nickel-silver for vibration resistance and conductivity. HTS 7411.22.00.00 classification based on copper-nickel-zinc alloy definition in note (c).