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Schedule 40 Copper-Nickel (Cu-Ni) pipes are widely used in marine, offshore, industrial, and power generation applications due to their excellent corrosion resistance, durability, and strength. These pipes are classified under the Schedule 40 standard, which specifies a moderate wall thickness suitable for medium-pressure systems.
Super Steel Manufacturing Co.,Ltd is professional nickel alloy pipe manufacturer, for more details, please contact:sales@super-steels.com
1. Characteristics of Schedule 40 Copper-Nickel Pipe
1.1 Material Composition
Available in Cu-Ni 90/10 (90% Copper, 10% Nickel) and Cu-Ni 70/30 (70% Copper, 30% Nickel) alloys.
Enhanced with iron and manganese to improve erosion and corrosion resistance in seawater environments.
1.2 Corrosion and Erosion Resistance
Highly resistant to seawater corrosion, making it ideal for marine piping and offshore systems.
Resists biofouling, reducing marine growth without the need for coatings or chemicals.
Performs well in high-velocity seawater flow, minimizing erosion-corrosion.
1.3 Strength and Pressure Handling
Schedule 40 pipes offer a moderate wall thickness, balancing strength and weight.
Suitable for medium-pressure applications in marine cooling systems, firefighting systems, and heat exchangers.
Can withstand thermal cycling, maintaining mechanical integrity under varying temperatures.
1.4 Fabrication and Weldability
Easily weldable using standard techniques (TIG, MIG, or brazing).
Available in seamless and welded forms, depending on application requirements.
Can be bent, flanged, or threaded to meet piping design needs.
2. Dimensions and Weight of Schedule 40 Copper-Nickel Pipe
Below are the approximate dimensions for Schedule 40 Cu-Ni pipes:
|
Nominal Pipe Size (NPS) |
Outside Diameter (OD) (inch) |
Wall Thickness (inch) |
Weight (lb/ft) |
|
1/2" |
0.84 |
0.109 |
0.85 |
|
3/4" |
1.05 |
0.113 |
1.13 |
|
1" |
1.315 |
0.133 |
1.68 |
|
1-1/2" |
1.9 |
0.145 |
2.72 |
|
2" |
2.375 |
0.154 |
3.66 |
|
3" |
3.5 |
0.216 |
7.58 |
|
4" |
4.5 |
0.237 |
10.79 |
|
6" |
6.625 |
0.280 |
18.97 |
|
8" |
8.625 |
0.322 |
28.58 |
Exact weight may vary based on specific alloy composition and manufacturing tolerances.
3. Applications of Schedule 40 Copper-Nickel Pipe
3.1 Marine and Offshore
Seawater cooling systems
Ballast water piping
Firefighting and sprinkler systems
Shipbuilding and offshore platform piping
3.2 Power and Industrial Systems
Heat exchangers and condensers
Desalination plants
HVAC and cooling water systems
Oil and gas processing
3.3 Plumbing and Water Distribution
Potable water systems
Wastewater and brine transport
Anti-biofouling piping for harbors and docks
4. Benefits of Schedule 40 Copper-Nickel Pipe
Superior corrosion resistance in seawater and industrial environments
Moderate wall thickness provides a balance of strength and weight
Excellent thermal and electrical conductivity
Easily welded and fabricated for diverse piping configurations
Long service life with minimal maintenance, reducing operational costs
Environmentally friendly and 100% recyclable
Conclusion
Schedule 40 Copper-Nickel pipes offer an ideal balance of strength, corrosion resistance, and durability, making them perfect for marine, industrial, and power generation applications. Their moderate wall thickness supports medium-pressure applications while maintaining ease of fabrication and long-term performance.
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