Cupro-Nickel Hollow Profile Tube for Offshore Oil Platform Risers
Specialty hollow profile from 90/10 cupro-nickel for flexible riser components in offshore oil platforms, providing corrosion resistance under high pressure. HTS 7407.29.16.10 due to copper-nickel base alloy and non-circular hollow profile design for structural reinforcement. Supplied in controlled lengths for welding.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If welded into line pipe configuration
Welded carbon steel line pipe has separate heading; cupro-nickel remains in Chapter 74 unless specified.
If classified as finished tube rather than profile
Circular cupro-nickel tubes for general use fall under 7409; special profiles stay in 7407.
If pre-assembled into drilling riser component
Parts of oil/gas drilling machinery classify under 8431 when beyond simple profile stage.
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Import Tips & Compliance
• Oil & gas importers must provide API/ISO material certificates confirming cupro-nickel UNS C70600 composition
• Clearly mark as 'structural profiles' vs 'pressure tubing'; include stress analysis if applicable
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