Copper Nickel Pipe offering exceptional corrosion resistance and long service life in seawater piping heat exchangers and condensers

1. Product Description
Copper-nickel pipes are seamless or welded tubular products made from copper-nickel alloys (typically CuNi 90/10 or CuNi 70/30), known for their excellent corrosion resistance and thermal conductivity.

2. Key Parameters

• Common Alloys: CuNi 90/10 (UNS C70600) and CuNi 70/30 (UNS C71500)

• Size Range: Outer diameter 6–610 mm; wall thickness 0.5–20 mm

• Operating Temperature: –200°C to +350°C

• Density: ~8.9 g/cm³

• Thermal Conductivity: ~29–45 W/(m·K)

3. Applications

• Marine engineering (seawater piping, heat exchangers, condensers)

• Offshore oil & gas platforms

• Shipbuilding (cooling and fire-fighting systems)

• Desalination plants and power generation stations

4. Advantages

• Exceptional resistance to seawater and biofouling

• High resistance to stress corrosion cracking and erosion

• Good fabricability (bending, welding, and forming)

• Long service life with low maintenance requirements

5. Functions

• Efficient heat transfer in condensers and coolers

• Reliable transport of seawater, freshwater, and aggressive fluids

• Anti-microbial surface performance in certain hygiene-sensitive applications

6. Precautions

• Avoid contact with ammonia, mercury, or sulfides to prevent corrosion

• Use proper welding procedures (TIG or MIG) with matching filler metals

• Ensure adequate flow velocity to avoid pitting or sediment accumulation

• Regular inspection recommended in high-temperature or turbulent service conditions