Seamless C71500 70/30 Copper-Nickel Tube
70/30 copper-nickel (C71500) seamless tubes for desalination and offshore platforms, offering maximum seawater corrosion resistance. Seamless copper-nickel base alloy tube per HTS 7411.29.10.00 and subheading note (d).
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If copper-nickel-zinc (nickel silver) composition
≥5% nickel with zinc shifts to nickel silver subheading.
If certified for high-pressure service as pipe
Pressure-rated copper alloy tubes may classify under iron/steel pipe equivalents.
If straight lengths under specific minimum dimensions
Dimensionally undersized tubes may fall under other copper articles.
Not sure which classification is right?
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Import Tips & Compliance
• 1
• Certify <1% zinc content to maintain copper-nickel base classification. 2
• Provide hydrostatic test pressure documentation. 3
• Note potential Section 232 tariffs on copper products
Related Products under HTS 7411.29.10.00
Seamless Admiralty Brass Tube
Admiralty brass tubes (C44300 alloy) are seamless copper-zinc-tin alloy pipes used primarily in heat exchangers and condensers for their excellent corrosion resistance in seawater. Classified under HTS 7411.29.10.00 as seamless tubes of copper alloys other than those specifically excluded. Meets subheading note (a) for brass alloys where zinc predominates.
Seamless C70600 Copper-Nickel Tube
90/10 copper-nickel alloy (C70600) seamless tubes designed for marine cooling systems and desalination plants due to superior resistance to flowing seawater corrosion. Falls under HTS 7411.29.10.00 as seamless copper alloy tubes, specifically copper-nickel base alloys per subheading note (d).
Seamless Phosphor Bronze Tube C51000
Seamless phosphor bronze (C51000, 5% tin) tubes used in hydraulic systems and instruments for their strength and wear resistance. HTS 7411.29.10.00 applies to seamless copper alloy tubes, qualifying as copper-tin base alloy per subheading note (b).
Seamless Naval Brass Tube C46400
Naval brass (C46400, copper-zinc-tin) seamless tubes for propeller shafts and marine hardware offering dezincification resistance. Seamless copper alloy tube under HTS 7411.29.10.00 per brass alloy definition in subheading note (a).
Seamless Aluminum Brass Condenser Tube
Arsenical aluminum brass tubes (C68700) for power plant condensers, seamless construction with enhanced corrosion resistance. HTS 7411.29.10.00 for other seamless copper alloy tubes meeting brass alloy criteria.
Seamless Red Brass Tube C23000
Red brass (85/15 copper-zinc, C23000) seamless tubes for plumbing and decorative applications with high corrosion resistance. HTS 7411.29.10.00 covers seamless copper-zinc alloy tubes (brass).