Why Choose CUNI 70/30 Copper-Nickel Alloy
The CUNI 70/30 alloy is composed of 70% copper and 30% nickel, with small amounts of iron and manganese added for enhanced strength and resistance. This composition makes it one of the most preferred materials for harsh, saline, and high-pressure environments, particularly in industries where seawater corrosion is a significant challenge.
Key properties of CUNI 70/30 include:
Outstanding Corrosion Resistance – The 30% nickel content provides superior resistance to seawater, brine, and acidic environments, making it ideal for shipbuilding and desalination.
High Mechanical Strength – The pipe maintains its integrity under high-pressure conditions, making it reliable for industrial and marine cooling systems.
Excellent Thermal Stability – Performs well in fluctuating temperatures without losing strength or flexibility.
Longevity and Durability – Reduces maintenance costs and downtime due to its long service life.
Compatibility with Modern Welding Techniques – Easy to fabricate and install using standard welding procedures.
“Our new CUNI 70/30 copper-nickel pipes are specifically designed to help our customers achieve superior performance and extended service life in some of the most demanding industrial settings,” said Joy Wang, Sales Director at TOBO Industrial. “By meeting ASTM B171 standards, we ensure that every pipe meets international quality benchmarks.”
Technical Specifications of the New Pipe
TOBO’s newly released copper-nickel pipe is engineered for precision and reliability.
Specification Details
Alloy Composition CUNI 70/30 (70% Cu, 30% Ni)
Outer Diameter (OD) 1 inch (25.4 mm)
Wall Thickness 2.5 mm
Working Pressure 16 Bar
Standard Length 6 meters
Standard Compliance ASTM B171
Surface Finish Smooth, corrosion-resistant
Applications Marine, desalination, offshore oil rigs, industrial cooling systems
Applications Across Multiple Industries
The CUNI 70/30 copper-nickel pipe is a versatile product suitable for a wide range of industrial and marine applications.
1. Marine Industry:
Used in shipbuilding for seawater cooling, bilge, ballast, and fire-fighting systems.
Prevents biofouling and corrosion caused by prolonged exposure to seawater.
2. Desalination Plants:
Essential for reverse osmosis and evaporative desalination systems, where corrosion from high-salinity environments is a major concern.
3. Offshore Oil and Gas:
Provides reliable transport for fluids and gases in offshore oil rigs, withstanding high pressure and corrosive conditions.
4. Power Generation:
Ideal for heat exchangers, condensers, and cooling circuits in thermal and nuclear power plants.
5. Industrial Processing:
Used in chemical processing plants, particularly where acidic or saline solutions are present.
Compliance with ASTM B171 Standards
ASTM B171 is a globally recognized standard for copper-alloy plate, sheet, strip, and rolled bar for general engineering purposes. By complying with this standard, TOBO ensures that its copper-nickel pipes deliver:
Consistent chemical composition and alloy quality
Reliable mechanical properties including tensile strength and elongation
Excellent dimensional accuracy for seamless installation
Full traceability, giving customers confidence in every product batch
“Our compliance with ASTM B171 means customers can trust the quality and reliability of every TOBO copper-nickel pipe,” added Joy Wang. “We provide full certification and testing reports with every shipment.”
Manufacturing Excellence and Quality Control
TOBO operates a state-of-the-art manufacturing facility in Shanghai, equipped with advanced production lines dedicated to copper-nickel products. The production process involves:
Raw Material Selection: Only the highest-grade copper and nickel materials are sourced to ensure premium quality.
Precision Casting and Rolling: Advanced equipment guarantees accurate dimensions and flawless finishes.
Stringent Testing: Every pipe undergoes multiple tests, including:
Hydrostatic pressure testing to check for leaks
Tensile strength and elongation tests
Corrosion resistance evaluation
Non-destructive testing (NDT) for internal defects
Final Inspection: Each product is carefully inspected before packaging to maintain TOBO’s quality standards.
The facility is ISO 9001 certified, ensuring consistent production and traceability.
Global Market and Export Potential
The global demand for copper-nickel pipes is projected to grow due to the expansion of marine infrastructure, renewable energy projects, and desalination facilities.
Asia-Pacific remains the fastest-growing market, with significant investments in shipbuilding and water treatment plants.
North America and Europe continue to modernize their power generation and industrial systems, increasing demand for high-grade corrosion-resistant materials.
TOBO currently exports to over 30 countries, including the United States, Canada, Japan, and South America, with an established network of distributors and partners.
Competitive Pricing and OEM/ODM Services
TOBO offers factory-direct pricing for bulk orders, providing a cost-effective solution for contractors and project developers. The company also provides OEM/ODM customization services, allowing customers to request:
Custom pipe diameters and lengths
Special coatings or finishes
Private labeling and packaging solutions
This flexibility makes TOBO a preferred partner for large-scale industrial projects worldwide.
Sustainability and Environmental Responsibility
Copper-nickel alloys are 100% recyclable, contributing to sustainable construction practices. TOBO is committed to minimizing its environmental footprint by:
Recycling production scrap
Using energy-efficient manufacturing technologies
Ensuring all products comply with RoHS and environmental safety regulations
Conclusion
The launch of TOBO’s CUNI 70/30 Copper-Nickel Pipe represents a major step forward for industries requiring high-performance, corrosion-resistant piping solutions. With its 1-inch diameter, 16 Bar pressure rating, 2.5mm thickness, and 6-meter standard length, this pipe delivers superior reliability and performance while meeting the rigorous ASTM B171 standard.
As global industries continue to evolve, TOBO remains committed to innovation, quality, and customer satisfaction, making it a trusted partner for marine, industrial, and energy sectors worldwide.