Copper Nickel Fittings Suppliers

Your Trusted Source for the Best Quality Stainless Steel Pipes in India

Solitaire Overseas is a trusted supplier and exporter of Copper Nickel Fittings and is also known as Cu Ni Fittings, engineered for outstanding durability and corrosion resistance in demanding applications. Our Cu Ni fittings for pipes & tubes are commonly used across marine, offshore, heat exchanger, and chemical processing industries.

We provide high quality Copper Nickel Fittings that’s why they are valued for their excellent anti-fouling properties and high tensile strength, meeting global standards for long-lasting performance even in harsh, salty, or aggressive environments. With precision engineering, consistent performance and swift availability. Solitaire Overseas provides high-quality Copper Nickel tube fittings, customized to meet your project’s exact needs with precision and reliability.

What are Copper Nickel Fittings?

Copper nickel (CuNi) fittings, as the name suggests, are pipes and tubes that are made from an alloy with corrosion resistant characteristics primarily composed of copper and nickel; and strength. Copper nickel fittings are typically found in either CuNi 90/10 or CuNi 70/30 grades. Copper nickel pipe fittings resist stress corrosion and are strong and thermally stable. Because of the durability of Copper Nickel Pipe Fittings, they are commonly used in seawater piping, ship construction, power plants and condenser systems where leakproof delivery is paramount, and compounds can withstand the sea, being leakproof is essential. Due to the smooth inner surface Copper Nickel fittings are a better flow success than other metals. The resistance to scaling and biofouling make Copper Nickel fittings ideal for marine and heat transfer systems.

Copper Nickel Tubes Fittings Specifications

Specification	Details
Standard	ASTM B466 / B467 / B122 / B171
Grades	Cu-Ni 90/10 (C70600), Cu-Ni 70/30 (C71500)
Product Type	Pipe Fittings, Tube Fittings (Seamless & Welded)
Manufacturing Process	Forged / Seamless / Fabricated
Size Range	1/2” to 24” NB (Larger sizes available on request)
Pressure Ratings	Class 150 – 2500 / PN6 – PN64
Connection Types	Butt Weld, Socket Weld, Threaded, Flanged
Surface Finish	Pickled, Annealed, Bright Annealed
Testing & Standards	NDT, Hydro Test, PMI, Dimensional Inspection
Applications	Marine Systems, Desalination Plants, Heat Exchangers, Offshore Rigs

Industry Standards & Certifications Compliance

At Solitaire Overseas, quality assurance is our core principle. Our Copper Nickel Tubes & Pipes Fittings meet globally recognized standards and certifications:

Standard/Certification	Compliance
ASTM B466/B467 (Seamless & Welded Fittings)	Yes
ASTM B122/B171 (Cu Ni Plate/Sheet Bar)	Yes
ASME B16.9 / B16.11 / B16.5 (Fitting Dimensions)	Yes
EEMUA 146 / 234 (Marine & Offshore Use)	Yes
ISO 9001 (Quality Management)	Yes
ISO 14001 (Environmental Management)	Yes

Chemical Composition of Copper Nickel Fittings

Element	90/10 (C70600)	70/30 (C71500)
Copper (Cu)	88.6 – 90.0	68.5 – 71.5
Nickel (Ni)	9.0 – 11.0	28.4 – 31.5
Iron (Fe)	≤ 1.5	≤ 0.4
Manganese (Mn)	≤ 1.0	≤ 1.0
Others	≤ 0.5	≤ 0.5

Mechanical Properties of Copper Nickel Fittings

Property	90/10 (C70600)	70/30 (C71500)
Tensile Strength	≥ 275 MPa	≥ 310 MPa
Yield Strength	≥ 105 MPa	≥ 125 MPa
Elongation (%)	≥ 30	≥ 30
Hardness (HB)	≤ 80	≤ 100
Modulus of Elasticity	140 GPa	140 GPa

Key Benefits of Copper Nickel Tube Fittings

Corrosion Resistance: Exceptional resistance to seawater, brine, and salt solutions.
Biofouling Resistance: Naturally resists microbial and barnacle growth in marine systems.
Thermal Stability: Maintains mechanical strength at elevated temperatures.
Long Service Life: Reduced maintenance, downtime, and replacement costs.
High Weldability: Suitable for both manual and automated welding processes.

Common Applications of Copper Nickel Fittings

Copper Nickel Tubes fittings Or Cu Ni Fittings pipes are used extensively in the following sectors:

Marine & Shipbuilding Piping Systems
Offshore Oil and Gas Platforms
Desalination Plants & Seawater Cooling Systems
Heat Exchangers & Condensers
Power Generation & Refineries
Chemical and Fertilizer Plants

Why Choose Solitaire Overseas for Copper Nickel Pipe Fittings?

With many years of experience Solitaire Overseas has built a solid reputation as a reliable supplier of Copper Nickel Fittings on a global level. Our state-of-the-art manufacturing and testing facilities enable us to supply Cu Ni fittings pipe and tube with dependable mechanical properties and a high degree of corrosion resistance. Whether you are working with demanding offshore applications or require essential heat exchanger applications, line Copper Nickel Fittings provide stability, durability, safety, and performance. We carry a variety of sizes in stock and offer custom fabricated solutions in short lead time and fast-ship worldwide delivery.

Frequently Asked Questions (FAQ)

What is copper-nickel pipe used for?

Copper-nickel pipes are commonly used in marine environments, desalination plants, offshore oil rigs, and heat exchangers thanks to their strong resistance to seawater corrosion and biofouling.

What are the benefits of copper-nickel?

Copper-nickel is known for its outstanding corrosion resistance, high strength, and excellent thermal stability. It also resists biofouling and is easy to fabricate and weld, making it perfect for tough environments

Is copper-nickel durable?

Yes, copper-nickel is incredibly durable. It can endure harsh marine and industrial conditions, including saltwater, high pressure, and temperature fluctuations, ensuring a long-lasting performance.

What are the disadvantages of copper-nickel?

The main drawbacks are that copper-nickel tends to be more expensive than some other alloys and can experience galvanic corrosion if paired with incompatible metals. However, these risks can be minimized with proper design and insulation.

What is the temperature limit for copper-nickel?

Copper-nickel alloys can generally tolerate temperatures as high as 400°C (752°F) without compromising their structural integrity, making them ideal for high-temperature environments.