Copper-nickel 90/10 seawater piping systems
CuNi 90/10 is the standard material for ship cooling, ballast and fire-main lines thanks to its natural resistance to seawater corrosion and biofouling. Pipes, flanges and elbows should come from the same standard set (EEMUA 144/146) and a class-approved mill.
Updated October 11, 2026
Quick facts
- HS code
- 7411.22
- Common grades
- CuNi10Fe1Mn (C70600), CuNi30 (C71500)
- Standards
- EEMUA 144/146, ASTM B466, DIN 86019
Overview
CuNi 90/10 is the standard material for ship cooling, ballast and fire-main lines thanks to its natural resistance to seawater corrosion and biofouling. Pipes, flanges and elbows should come from the same standard set (EEMUA 144/146) and a class-approved mill.
Typical applications
- Ship cooling water lines
- ballast and fire mains
- offshore platforms
- desalination plants
- condenser tubes
Specifications to agree with your supplier
When buying Copper-nickel 90/10 seawater piping systems, agree in writing on the grade, applicable standard, packaging, delivery term (Incoterm) and acceptance criteria. Ask for a certificate of analysis (COA) for every lot, the technical data sheet (TDS) and, where relevant, the safety data sheet (SDS).
How to source reliably
Work with verified (KYC) suppliers, request samples and a trial lot before large volumes, use independent inspection (SGS, Bureau Veritas, etc.) and tie payment terms to shipping milestones. The platform deal room keeps offer history, the digital contract and delivery steps on record in one place.
Transport, storage & customs
Customs usually classify Copper-nickel 90/10 seawater piping systems under HS heading 7411.22; always confirm the exact code in your importing country’s tariff. Store the goods dry, protected from moisture and direct sunlight with packaging intact, and ask for loading photos and the bill of lading (B/L) before shipment.
Frequently asked questions
What is the HS code for Copper-nickel 90/10 seawater piping systems?
It is usually classified under heading 7411.22. The sub-heading depends on form and purity — confirm it in your importing country’s customs tariff.
How do I find a reliable Copper-nickel 90/10 seawater piping systems supplier?
Prefer suppliers with the verified badge, a high trust score and completed deals. For large volumes, post a buying request to compare several offers and sign the contract in the deal room.
Can I buy small quantities as well?
Yes. For samples and small quantities you can message suppliers directly from the directory, free and commission-free. The deal room is designed for large, protected deals.