Copper Nickel Tees
Copper Nickel Tees are widely used in seawater piping systems where corrosion resistance, long service life, and stable performance are essential. Manufactured from 90/10 Cu-Ni or 70/30 Cu-Ni alloys, these tee fittings provide excellent resistance to seawater corrosion, biofouling, erosion, and stress corrosion cracking.
- 90/10 and 70/30 copper nickel alloys
- Equal tees and reducing tees available
- Suitable for seawater piping systems
- For shipbuilding, offshore, and desalination projects
- Custom sizes and wall thicknesses supported
What Are Copper Nickel Tees?
Copper Nickel Tees are T-shaped pipe fittings used to connect three sections of copper nickel pipe. They allow fluid flow to split into two directions or combine from multiple pipelines into a single system.
These fittings are widely used in shipbuilding, offshore platforms, power plants, desalination facilities and seawater cooling systems where corrosion resistance is critical.
Copper Nickel Tees are manufactured from copper nickel alloys that provide outstanding resistance to seawater corrosion, erosion and marine biofouling, making them one of the preferred fitting solutions for marine piping systems.
Copper Nickel Tee Product Gallery
Browse different types of Copper Nickel Tees including Equal Tees, Reducing Tees, 90/10 Cu-Ni Tees and 70/30 Cu-Ni Tees.
Copper Nickel Tee Specifications
Our Copper Nickel Tees can be supplied according to project drawings, customer requirements, or international standards.
| Product Name | Copper Nickel Tees |
| Types | Equal Tee, Reducing Tee, Butt Weld Tee, Fabricated Tee |
| Materials | CuNi 90/10, CuNi 70/30, C70600, C71500 |
| Size Range | Custom sizes available upon request |
| DN Size | DN15 – DN1200 |
| Schedule | SCH 10 – SCH XXS |
| Wall Thickness | Standard or customized |
| Connection | Butt Weld |
| Standards | ASME, ASTM, EEMUA, DIN, EN, JIS or project specifications |
| Surface | Pickled, cleaned, polished, or as required |
| Testing | Visual inspection, dimensional inspection, PMI, pressure test if required |
| Application | Seawater piping, marine systems, offshore platforms, desalination plants |
Types of Copper Nickel Tees
Equal Copper Nickel Tee
An equal tee has three openings of the same diameter and is commonly used in main piping distribution systems.
- Seawater systems
- Cooling water pipelines
- Shipboard piping
- Firewater networks
Reducing Copper Nickel Tee
A reducing tee has a smaller branch outlet and is used when branch flow requirements differ from the main pipeline.
- Equipment connections
- Heat exchangers
- Pump systems
- Instrumentation lines
Seamless Copper Nickel Tee
Manufactured from seamless pipe materials for improved pressure performance and structural integrity.
- Uniform wall thickness
- Higher strength
- Critical applications
- Reduced leakage risk
Welded Copper Nickel Tee
Produced from copper nickel pipe or plate materials and suitable for large-size piping systems.
- Cost-effective
- Large dimensions available
- Custom manufacturing
- Industrial projects
Copper Nickel Material Grades
90/10 Copper Nickel Tee (UNS C70600)
90/10 copper nickel, also known as CuNi 90/10 or C70600, contains approximately 90% copper and 10% nickel, with small additions of iron and manganese. This alloy is widely used in seawater service because of its good corrosion resistance and cost-effective performance.
- Excellent seawater corrosion resistance
- Good weldability
- Cost-effective solution
- Widely used in commercial vessels
- Suitable for cooling water systems
70/30 Copper Nickel Tee (UNS C71500)
70/30 copper nickel, also known as CuNi 70/30 or C71500, contains approximately 70% copper and 30% nickel. It provides higher strength and better resistance to high-velocity seawater compared with 90/10 Cu-Ni.
- Superior erosion resistance
- Higher mechanical strength
- Longer service life
- Suitable for offshore platforms
- Ideal for high-velocity seawater systems
For demanding offshore, naval, and high-pressure seawater systems, 70/30 Copper Nickel Tees are often preferred.
Copper Nickel Equal Tee and Reducing Tee Dimensions & Standards
We offer copper-nickel butt-weld tees—including both equal and reducing types—suitable for marine seawater piping, offshore platforms, cooling water systems, heat exchange equipment, and seawater-resistant piping projects. Products can be manufactured in accordance with standards such as DIN 86088, EEMUA 234/146, and ASME B16.9, with customization available for specifications, wall thicknesses, and specific project requirements.
Equal tees are designed for connections where the main pipe and branch pipe share the same dimensions, while reducing tees are suitable for flow-splitting or converging applications where the branch pipe and main pipe have different diameters. Copper-nickel alloys offer excellent resistance to seawater corrosion and erosion, as well as superior weldability, making them ideal for long-term use in harsh marine environments.
Copper Nickel Equal Tee
- DIN 86088 Copper Nickel Equal Tee
- EEMUA 234 / EEMUA 146 Copper Nickel Equal Tee
- ASME B16.9 Copper Nickel Equal Tee
Equal tees are designed with three outlets of the same nominal diameter, allowing branch connections while maintaining consistent flow characteristics throughout the piping system.
Copper Nickel Reducing Tee
- DIN 86088 Copper Nickel Reducing Tee
- EEMUA 234 / EEMUA 146 Copper Nickel Reducing Tee
- ASME B16.9 Copper Nickel Reducing Tee
Reducing tees feature a smaller branch outlet than the main run pipe and are commonly used where flow distribution, pressure management, or pipeline size transitions are required.
Our copper nickel tees are produced with strict dimensional control and can be supplied with mill test certificates, third-party inspection reports, and customized dimensions according to project specifications. Both equal and reducing configurations are available in seamless and welded construction to meet the requirements of shipbuilding, offshore engineering, and seawater service applications.
To purchase copper-nickel equal tees or reducing tees, please provide specifications, dimensions, material grades, or project drawings; we will recommend the appropriate copper-nickel butt-weld tee solution based on your piping system requirements.
Key Advantages of Copper Nickel Tees
Excellent Seawater Corrosion Resistance
Copper Nickel Tees are especially suitable for seawater and brackish water systems. The alloy naturally develops a stable protective surface film, which helps reduce corrosion and extend service life.
Good Resistance to Biofouling
Copper nickel alloys are known for their natural resistance to marine biofouling. This helps reduce the buildup of organisms inside piping systems and supports smoother flow over time.
Reliable Performance in Marine Conditions
In shipbuilding and offshore projects, piping components must handle vibration, saltwater exposure, and changing operating conditions. Copper Nickel Tees provide stable mechanical performance in these demanding environments.
Long Service Life
Compared with many carbon steel or low-grade stainless steel fittings, Copper Nickel Tees can offer a longer service life in chloride-containing environments, reducing replacement frequency and maintenance costs.
Suitable for Fabrication and Welding
Copper nickel fittings have good weldability when proper welding procedures and filler materials are used. This makes installation convenient for shipyards, offshore yards, and industrial piping contractors.
Copper Nickel Tee Applications
Copper nickel tees are widely used in seawater piping systems where corrosion resistance, long service life, and reliable flow distribution are essential. Thanks to the excellent performance of copper nickel alloys in marine environments, these tee fittings are commonly installed in shipbuilding, offshore, desalination, and coastal industrial projects.
In practical applications, copper nickel tees help connect branch pipelines while maintaining stable flow in systems exposed to seawater, brine, and other chloride-rich media. Both 90/10 and 70/30 copper nickel tees are selected depending on pressure, temperature, and corrosion requirements.
- Seawater cooling lines for ships and marine vessels
- Offshore platform piping and utility systems
- Marine fire water and sprinkler systems
- Ballast water transfer and treatment systems
- Bilge, drain, and wastewater piping systems
- Desalination plant seawater intake and discharge lines
- Heat exchanger inlet and outlet connections
- Power plant seawater intake and cooling systems
- Coastal chemical processing and refinery facilities
- Marine HVAC, refrigeration, and cooling circuits
For projects where seawater corrosion, biofouling, and long-term maintenance costs are key concerns, copper nickel tees provide a dependable solution. Their durability and compatibility with copper nickel pipes make them a preferred fitting choice for demanding marine and offshore piping systems.
Why Choose Our Copper Nickel Tees?
Our copper nickel tees are manufactured for reliable performance in seawater piping, shipbuilding, offshore platforms, desalination plants, and industrial pipeline systems. We supply both standard and custom Cu-Ni tee fittings to match project drawings, piping specifications, and recognized international standards.
Available in 90/10 and 70/30 copper nickel grades, our tees offer excellent resistance to seawater corrosion, erosion, and biofouling. Each fitting is produced with close attention to material selection, dimensional accuracy, welding quality, and surface finish, helping ensure stable installation and long service life in demanding environments.
Our Advantages
- 90/10 and 70/30 copper nickel tees available
- Equal tees and reducing tees for different piping layouts
- Custom sizes, wall thicknesses, and end connections supported
- Manufactured according to customer drawings or project specifications
- Dimensional inspection and surface quality checks before shipment
- Material test certificates and inspection documents available upon request
- Suitable for marine, offshore, desalination, and industrial applications
- Secure export packaging for sea freight and long-distance transportation
Request a Quote for Copper Nickel Tees
Looking for 90/10 or 70/30 Copper Nickel Tees? Send us your required size, wall thickness, quantity, material grade, and project specifications. Our technical sales team will provide pricing, lead time, and documentation support within 12 hours.
Get Free PricingWhether you need standard copper nickel tee fittings for routine installation or custom-fabricated Cu-Ni tees for a specific engineering project, our team can provide a practical solution based on your material grade, size range, pressure requirement, and delivery schedule.
Copper Nickel Tee Quality Control
Every copper nickel tee is checked carefully before shipment to help ensure it meets the required specification, drawing tolerance, and project documentation needs. For marine, offshore, shipbuilding, desalination, and industrial piping applications, reliable inspection is essential for long-term corrosion resistance and safe service performance.
Depending on the purchase order, applicable standard, and end-use requirements, our inspection process may include the following quality control steps:
- Verification of raw material grade and heat number
- Chemical composition review for Cu-Ni 90/10, Cu-Ni 70/30, or specified alloy
- Dimensional inspection of outside diameter, wall thickness, center-to-end, and branch size
- Visual inspection of surface finish, forming quality, and edge condition
- Positive Material Identification when requested
- Weld inspection for fabricated copper nickel tees
- Pressure test, leak test, or other project-specific testing when required
- Final checking of marking, labeling, packing, and shipping documents
Material Test Certificates can be provided with the shipment for traceability, compliance review, and project record keeping. Additional third-party inspection can also be arranged when specified by the customer.
Copper Nickel Tee Packaging and Delivery
Copper Nickel Tees are packed with care to protect the fitting surface, bevel ends, and sealing areas during storage, handling, and international transportation. Before packing, each Cu-Ni tee is checked for cleanliness and condition to help reduce the risk of scratches, moisture exposure, or contamination during shipment.
Depending on the size, quantity, destination, and shipping method, copper nickel pipe tees can be packed in plastic wrapping, protective end caps, wooden cases, pallets, or seaworthy export packages. Customized packing is also available for project orders, bulk shipments, and special handling requirements.
- Plastic wrapping to protect the product surface
- Protective end caps for threaded, beveled, or welded ends
- Strong wooden cases or pallets for safe loading and unloading
- Moisture-resistant and seaworthy export packaging
- Customized packing solutions based on size, quantity, and transport method
For easy identification at the job site, each copper nickel tee can be marked with key information such as material grade, size, standard, heat number, pressure rating, and other customer-required details. Marking and packing can be arranged according to project specifications or inspection requirements.
FAQ – Copper Nickel Tees
What materials are used for Copper Nickel Tees?
Copper Nickel Tees are commonly manufactured from 90/10 Copper Nickel (C70600) and 70/30 Copper Nickel (C71500). Material selection depends on seawater conditions, flow velocity, pressure requirements, and project specifications.
What is the difference between 90/10 and 70/30 Copper Nickel Tees?
90/10 Copper Nickel Tees provide excellent seawater corrosion resistance and are widely used in marine piping systems. 70/30 Copper Nickel Tees offer higher mechanical strength and superior resistance in more aggressive seawater environments.
Where are Copper Nickel Tees used?
Copper Nickel Tees are widely used in shipbuilding, offshore oil and gas platforms, seawater cooling systems, desalination plants, ballast water systems, fire water pipelines, and other marine engineering applications.
Can Copper Nickel Tees be customized?
Yes. Copper Nickel Tees can be manufactured according to customer drawings and project requirements, including custom sizes, wall thicknesses, branch dimensions, and applicable industry standards.
Are Copper Nickel Tees suitable for seawater service?
Yes. Copper Nickel alloys are specifically designed for seawater applications and offer outstanding resistance to corrosion, erosion, and marine biofouling, making them ideal for long-term marine service.
Can Copper Nickel Tees be welded?
Yes. Both C70600 (90/10) and C71500 (70/30) Copper Nickel alloys have excellent weldability and are commonly used in welded piping systems for marine and offshore applications.
What standards are commonly used for Copper Nickel Tees?
Common manufacturing standards include DIN 86088, EEMUA 234, EEMUA 146, ASME B16.9, ASTM B366, MSS SP-43, as well as project-specific customer requirements.
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