TOBO Launches Premium Copper Nickel 70/30 Flanges for High-Pressure Marine and Industrial Applications
Shanghai, May 28, 2025 — TOBO Industrial (Shanghai) Co., Ltd., a global leader in metal pipe fittings and flange manufacturing, proudly announces the release of its latest high-performance product: Corrosion-Resistant Copper Nickel 70/30 Flanges RJ CL1500 B564 N07060. Specifically engineered for extreme pressure and corrosive environments, these new flanges offer superior reliability, longer service life, and compliance with the most stringent industrial standards.
As industries face increasingly harsh operating environments—from offshore platforms to chemical processing plants—TOBO’s new Cu-Ni 70/30 flanges are poised to set a new benchmark in high-pressure, corrosion-resistant connection solutions.
Engineered for Harsh Environments
The Copper Nickel 70/30 alloy (70% copper, 30% nickel) is renowned for its exceptional resistance to seawater corrosion, erosion, and biofouling. This makes it one of the most reliable materials for use in marine, naval, and offshore oil & gas applications. In addition, the alloy exhibits strong mechanical strength and excellent fabricability, allowing for safe and secure pipe-to-pipe connections even under elevated temperatures and pressures.
TOBO’s latest flange release meets the B564 N07060 standard, ensuring material traceability and quality consistency. With a raised face (RJ) and a CL1500 pressure class rating, these flanges are built to withstand up to 1500 psi, making them ideal for high-pressure systems requiring leak-tight integrity.
Key Features at a Glance
Material: Copper Nickel 70/30 (UNS N07060), per ASTM B564
Design: Ring Joint (RJ) facing for high-seal integrity
Pressure Class: CL1500
Corrosion Resistance: Outstanding in seawater, brine, and chemical environments
Fabrication: Machined to tight tolerances for high-pressure sealing
Applications: Offshore, shipbuilding, desalination, petrochemical, and power generation
These flanges are meticulously manufactured at TOBO’s facility in Shanghai using advanced CNC machining, rigorous quality inspections, and third-party certifications to ensure consistent performance in mission-critical environments.
Why Copper Nickel 70/30?
Copper Nickel alloys, particularly 70/30 compositions, are prized in demanding industries for several reasons:
Superior Resistance to Seawater: The 70/30 alloy resists corrosion from chlorides, sulfates, and saline water, which degrade most metals over time. It also prevents barnacle growth and other biological fouling, reducing maintenance costs.
High Strength and Ductility: These flanges maintain structural integrity under mechanical stress and thermal expansion.
Thermal and Electrical Conductivity: Ideal for heat exchangers and power plants.
Weldability and Formability: The alloy can be welded and formed without risk of cracking, making installation and customization straightforward.
TOBO’s flanges leverage all these material benefits, ensuring they serve reliably in critical systems such as shipboard piping, seawater cooling, ballast lines, and fire-fighting systems.
Designed for Pressure and Precision
The Ring Joint (RJ) facing on TOBO’s CL1500 Cu-Ni flanges provides an interference seal through precision-machined grooves and a metallic ring gasket. This design is especially suited for:
High-temperature and high-pressure pipelines
Oil refineries and gas plants
Subsea wellheads and manifolds
Power generation turbines
The CL1500 rating denotes the flange’s capability to withstand substantial internal pressures, making it suitable for demanding systems with hazardous or high-energy media.
Additionally, the RJ design minimizes potential leak paths and ensures repeatable, reliable sealing — even after thermal cycling or prolonged exposure to dynamic forces.
Strict Standards and Certifications
TOBO’s Copper Nickel 70/30 flanges conform to international specifications, including:
ASTM B564: For wrought nickel alloy forgings
ASME B16.5: For pipe flanges and flanged fittings
UNS N07060: For chemical composition verification
ISO 9001:2015: For quality management systems
Each product undergoes strict dimension and pressure testing, spectrochemical analysis, and hydrostatic inspection, with material test certificates provided upon request.
For marine and defense industry customers, TOBO also supports third-party inspection from agencies like BV, DNV, ABS, and SGS, ensuring global compliance and peace of mind.
Applications Across Key Industries
The TOBO Copper Nickel 70/30 CL1500 flanges are already in use across a wide spectrum of sectors:
Marine and Naval Shipbuilding: For seawater intake and cooling systems
Oil & Gas Offshore Platforms: For fire water, hydraulic control, and process piping
Power Plants: Especially in saltwater-cooled condensers
Desalination Facilities: Where highly corrosive brine environments require robust materials
Chemical Processing: For pipelines handling sulfuric acid, alkalis, and corrosive slurries
The product’s combination of strength, corrosion resistance, and pressure endurance makes it an ideal choice for system designers and procurement managers seeking long-term performance.
Competitive Pricing and Customization
By leveraging bulk copper-nickel alloy procurement and automated production lines, TOBO offers competitive factory-direct pricing on its entire 70/30 Cu-Ni flange range.
Customization options include:
Different flange face types (RF, RTJ, FF)
Bolt-hole configurations
Heat number stamping and logo branding
Coating and anti-seize treatment options
OEM packaging and palletization for export
TOBO’s engineering team also supports special request production, including small-batch orders for urgent ship repairs or plant shutdowns.
A Trusted Partner for Global Projects
With exports to over 60 countries, TOBO Industrial is a trusted partner for engineering contractors, shipyards, and energy firms worldwide. The company’s Shanghai-based headquarters offers full-cycle services, from consultation and CAD drawing support to shipping and documentation.
Clients benefit from:
24/7 technical assistance
Multilingual sales support
On-time delivery backed by export experience
Competitive Incoterms (FOB, CFR, CIF)
Seamless logistics and customs clearance
Conclusion
In today’s global infrastructure landscape, reliability, longevity, and cost-effectiveness are more important than ever. TOBO’s Corrosion-Resistant Copper Nickel 70/30 Flanges RJ CL1500 B564 N07060 meet all three demands. Combining elite material science with precision machining and industrial know-how, these flanges are not just components—they are critical system enablers.
Whether you are outfitting a new vessel, upgrading a refinery, or constructing a high-performance desalination plant, TOBO’s Cu-Ni 70/30 flanges are engineered to deliver confidence and continuity—even in the harshest conditions.