Copper Nickel Weld Neck Flanges
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Flange Materials
Copper Nickel Weld Neck Flanges
The trusted choice for seawater and marine piping
Copper Nickel Flanges are widely used in marine and offshore piping because of their outstanding resistance to seawater corrosion and biofouling. The alloy also offers good resistance to erosion, making it reliable in seawater cooling and ballast piping systems.
Royal Steel India manufactures Copper Nickel Flanges in Cu-Ni 90/10 (C70600) and Cu-Ni 70/30 (C71500) grades for shipbuilding, offshore platforms and desalination plants.
Key Features
- Excellent resistance to seawater corrosion
- Natural resistance to marine biofouling
- Good resistance to erosion and impingement attack
- Retains ductility at low temperatures
- Proven long-term performance in marine service
- Good weldability and formability
Standards Followed
- ASME B16.5
- ASME B16.47
- ANSI
- DIN
- EN 1092-1
- BS
- JIS
Applications
Industries and sectors that rely on our Copper Nickel Weld Neck Flanges.
- Oil & Gas Industry
- Petrochemical Plants
- Chemical Processing
- Power Plants
- Marine & Offshore
- Water Treatment Plants
- Food & Beverage Industry
- Pharmaceutical Industry
- Paper & Pulp Industry
- Construction Projects
Why Choose Royal Steel India?
Royal Steel India manufactures and supplies Copper Nickel Weld Neck Flanges that are precision-engineered, rigorously tested, and backed by mill test certificates for full traceability. Every batch is manufactured to meet international quality standards and the specific requirements of your project.
Whether you need standard sizes or custom specifications, we offer competitive pricing, reliable stock availability, and timely delivery for domestic and export orders.
Frequently Asked Questions
What are Copper Nickel Flanges used for?
They are primarily used in marine, offshore and shipbuilding piping systems that carry seawater, such as cooling water and ballast lines.
Why is Copper Nickel preferred for seawater piping?
It resists seawater corrosion and biofouling far better than carbon steel or standard stainless steel, reducing maintenance in marine service.
Which copper nickel grades do you supply?
We supply Cu-Ni 90/10 (C70600) and Cu-Ni 70/30 (C71500) grade flanges.
Need a Quote on Copper Nickel Weld Neck Flanges?
Share your size, grade and quantity requirement and our team will get back to you with pricing and availability.