45° Long Radius Copper Nickel Elbow
When a piping system needs a smooth change of direction without creating excessive pressure loss, a 45° Long Radius Copper Nickel Elbow is often the preferred solution. Designed for seawater, shipbuilding, offshore platforms and industrial cooling systems, this fitting offers reliable corrosion resistance, stable performance and a longer service life in demanding environments.
As a professional supplier of Copper Nickel Pipe Fittings, we provide high-quality 45° LR Copper Nickel Elbow products in CuNi 90/10 and CuNi 70/30 materials, with different sizes, wall thicknesses and standards available for project requirements.
- Product: 45° Long Radius Copper Nickel Elbow
- Also known as: 45° LR Copper Nickel Elbow
- Material: CuNi 90/10, CuNi 70/30
- Connection: Butt Weld / As Required
- Application: Marine, offshore and seawater systems
The long radius design helps the pipeline maintain smoother flow, reduce turbulence and improve operational stability, especially in marine and seawater service conditions.
What Is a 45° LR Copper Nickel Elbow?
A 45° LR Copper Nickel Elbow is a long radius pipe fitting designed to change the direction of fluid flow by 45 degrees. The "LR" (Long Radius) design features a centerline radius equal to 1.5 times the nominal pipe diameter, providing smoother flow characteristics, lower pressure loss, and improved resistance to turbulence compared with short radius elbows.
45° LR Copper Nickel Elbow Specifications
The following information can be adjusted according to project drawings, technical standards and purchase requirements.
| Product Name | 45° Long Radius Copper Nickel Elbow |
| Also Known As | 45° LR Copper Nickel Elbow, 45 Degree CuNi Elbow |
| Material | CuNi 90/10, CuNi 70/30 |
| Type | Long Radius Elbow |
| Angle | 45 Degree |
| Connection | Butt Weld / As Required |
| Size Range | Customized according to project drawings |
| Standards | ASME, DIN, EN, EEMUA or project specification |
| Application | Marine, offshore, seawater, cooling water systems |
| Surface | Clean finish, pickled or as required |
If you need matching fittings, visit our Copper Nickel Reducer and Copper Nickel Stub End pages for more options.
45° LR Copper Nickel Elbow Features
Our 45° Long Radius Copper Nickel Elbow is manufactured to support stable installation and long-term operation in corrosive environments.
- Smooth 45° directional flow transition
- Long radius (1.5D) design minimizes pressure loss and turbulence
- Outstanding resistance to seawater corrosion
- Excellent protection against erosion and marine biofouling
- Ideal for marine, offshore, shipbuilding and industrial piping systems
- Manufactured in CuNi 90/10 (C70600) and CuNi 70/30 (C71500)
- Custom dimensions, wall thicknesses and end connections available
- Compatible with copper nickel pipes, tees, reducers, flanges and other fittings
For projects requiring different angles, we also supply 90° Copper Nickel Elbow and Copper Nickel Tee fittings.
Available Copper Nickel Grades for 45° Long Radius Copper Nickel Elbow
Our 45° Long Radius Copper Nickel Elbow is available in two industry-standard copper nickel alloys: CuNi 90/10 (C70600) and CuNi 70/30 (C71500). Both materials are designed for long-term service in marine and seawater piping systems, providing outstanding resistance to corrosion, biofouling and erosion while maintaining reliable mechanical performance.
CuNi 90/10 (C70600)
CuNi 90/10 is the most commonly specified material for 45° LR Copper Nickel Elbow fittings used in commercial shipbuilding, seawater cooling circuits, desalination plants and heat exchanger piping. It combines excellent seawater corrosion resistance with good fabrication and welding characteristics, making it a cost-effective solution for most marine piping applications.
CuNi 70/30 (C71500)
CuNi 70/30 contains a higher percentage of nickel, providing increased strength and enhanced resistance to high-velocity seawater, cavitation and erosion. It is frequently selected for offshore platforms, naval vessels, power generation facilities and other demanding marine environments where maximum durability is required.
Whether your project requires standard dimensions or custom specifications, we can manufacture 45° Long Radius Copper Nickel Elbows in both CuNi 90/10 and CuNi 70/30 to meet international standards and project-specific requirements.
To complete your piping system, explore our Copper Nickel Pipes, Copper Nickel Flanges, and other compatible Copper Nickel Pipe Fittings.
Copper Nickel Elbow Chemical Composition
90/10 (UNS C70600) CuNi Elbow Chemical Composition
| KME CuNi90/10 | DIN 17664 2.0882 | BS 2871 CN102 | ASTM B466 C70600 | JIS H3300 C7060T | DIN 86019 2.1972 | EEMUA 234 UNS 7060X | GB/T 5231 BFe10-1.6-1 | |
| Ni% | 10.0-11.0 | 9.0-11.0 | 10.0-11.0 | 9.0-11.0 | 9.0-11.0 | 9.0-11.0 | 10.0-11.0 | 9.0-11.0 |
| Fe% | 1.5-1.8 | 1.0-2.0 | 1.0-2.0 | 1.0-1.8 | 1.0-1.8 | 1.5-1.8 | 1.5-2.0 | 1.5-1.8 |
| Mn% | 0.6-1.0 | 0.5-1.0 | 0.5-1.0 | max.1.0 | 0.2-1.0 | 0.5-1.0 | 0.5-1.0 | 0.5-1.0 |
| C% | max.0.05 | max.0.05 | max.0.05 | max.0.05 | max.0.05 | max.0.05 | max.0.05 | |
| Pb% | max.0.01 | max.0.03 | max.0.01 | max.0.02 | max.0.05 | max.0.01 | max.0.01 | max.0.03 |
| S% | max.0.005 | max.0.02 | max.0.05 | max.0.02 | max.0.005 | max.0.02 | max.0.01 | |
| P% | max.0.02 | max.0.02 | max.0.02 | max.0.02 | max.0.02 | max.0.02 | ||
| Zn% | max.0.05 | max.0.50 | max.0.50 | max.0.50 | max.0.05 | max.0.20 | max.0.20 | |
| Other | max.0.20 | max.0.30 | max.0.20 | max.0.30 | max.0.40 | |||
| Cu% | rem. | rem. | rem. | rem. | +Ni+Fe+Mn min99.5 | rem. | rem. | rem. |
70/30 (UNS C71500) CuNi Elbow Chemical Composition
| KME CuNi70/30 | DIN 176642.0882 | BS 2871 CN107 | ASTM B466C71500 | JIS H3300C7150T | |
| Ni% | 30.0-32.0 | 30.0-32.0 | 30.0-32.0 | 29.0-33.0 | 29.0-33.0 |
| Fe% | 0.47-0.7 | 0.4-1.0 | 0.4-1.0 | 0.4-1.0 | 0.4-1.0 |
| Mn% | 0.5-1.0 | 0.5-1.5 | 0.5-1.5 | max.1.0 | 0.2-1.0 |
| C% | max.0.04 | max.0.05 | max.0.06 | max.0.05 | |
| Pb% | max.0.01 | max.0.03 | max.0.01 | max.0.02 | max.0.05 |
| S% | max.0.01 | max.0.02 | max.0.08 | max.0.02 | |
| P% | max.0.02 | max.0.02 | max.0.02 | ||
| Zn% | max.0.20 | max.0.50 | max.0.50 | max.0.50 | |
| Other | max.0.30 | max.0.30 | |||
| Cu% | rem. | rem. | rem. | rem. | +Ni+Fe+Mn min99.5 |
Why Choose a 45° Long Radius Copper Nickel Elbow?
A 45° long radius copper nickel elbow is designed to create a gradual change in pipeline direction, helping seawater and other service fluids move with less disturbance. The longer bend radius reduces pressure loss, lowers turbulence and helps protect the pipe system from premature wear caused by high-velocity flow.
In marine and offshore applications, material performance is just as important as fitting geometry. Copper nickel alloys are widely selected for seawater piping because they offer strong resistance to corrosion, biofouling and erosion. This makes the fitting a practical choice for cooling water lines, shipbuilding systems, desalination plants and offshore platform piping.
When installed with compatible copper nickel pipe, a long radius 45° elbow helps maintain smoother flow and long-term system reliability. For complete seawater piping solutions, you can pair this fitting with our CuNi 90/10 Pipe to achieve consistent performance across the entire pipeline.
Typical Applications of 45° LR Copper Nickel Elbow
- Shipbuilding and marine piping networks
- Seawater cooling and heat rejection systems
- Offshore oil & gas production platforms
- Desalination and freshwater production facilities
- Heat exchanger inlet and outlet piping
- Firefighting water distribution systems
- Ballast water management systems on vessels
- Pump suction and discharge line connections
- Industrial water treatment and circulation systems
With excellent resistance to seawater corrosion, biofouling, and erosion, copper nickel alloys are widely selected for critical piping systems that require stable performance and reduced maintenance over extended service life. This makes the 45° LR Copper Nickel Elbow a dependable choice for both marine and offshore engineering projects.
45° LR Copper Nickel Elbow Quality Assurance
Each 45° LR Copper Nickel Elbow is manufactured under tightly controlled production standards to ensure accurate dimensions, reliable material performance, and full welding compatibility. In seawater, marine, and offshore piping systems, product quality directly influences installation efficiency, system stability, and long-term operating costs.
Our standard inspection procedures include:
- Verification of material test certificates (MTC)
- Dimensional checks against international standards
- Comprehensive visual examination
- Surface condition and finish assessment
- PMI testing for alloy confirmation when required
- Final packaging and export readiness inspection
We also understand that project schedules in marine and offshore engineering are often tight. Whether you are sourcing a single 45° Long Radius Copper Nickel Elbow for maintenance or arranging a bulk order of Copper Nickel Pipe Fittings for a new build project, our team supports fast quotation response, technical clarification, and export-grade packing to keep your supply chain moving smoothly.
Order 45° LR Copper Nickel Elbow for Your Project
Choosing the right copper nickel fitting helps reduce maintenance work and improves pipeline reliability, especially in seawater and marine environments. Our 45° LR Copper Nickel Elbow is designed for customers who need dependable performance, accurate dimensions and consistent material quality.
Send us your size, material grade, wall thickness, standard and quantity. Our sales team will provide a competitive quotation and help confirm the suitable copper nickel elbow for your application.
FAQ – 45° Long Radius Copper Nickel Elbow
What is the difference between a 45° elbow and a 90° elbow?
A 45° elbow changes the flow direction by 45 degrees, while a 90° elbow changes it by 90 degrees. Because of its gentler angle, a 45° elbow generally creates less turbulence, lower pressure drop, and smoother fluid flow, making it suitable for systems where flow efficiency is important.
What standards apply to copper nickel elbows?
Copper nickel elbows can be manufactured according to several international standards, including ASME B16.9, DIN, EN, EEMUA 146, and various MIL specifications for naval and marine applications. The appropriate standard depends on your project requirements, industry regulations, and piping system design.
Are 45° long radius copper nickel elbows available in seamless and welded types?
Yes. Both seamless and welded copper nickel elbows are available. Seamless elbows are commonly selected for higher-pressure or critical service applications, while welded elbows are often preferred for larger diameters and more cost-effective pipeline projects.
What sizes are available?
Standard sizes typically range from 1/2 inch to 24 inches, with larger diameters available upon request. Customized dimensions can also be produced to meet specific marine, offshore, and industrial piping requirements.
What pressure ratings are available?
Pressure ratings depend on the material grade, wall thickness, pipe schedule, and applicable manufacturing standard. Common options include Schedule 10, Schedule 40, Schedule 80, and custom wall thicknesses designed to match your operating conditions.
Are copper nickel elbows resistant to seawater corrosion?
Yes. Copper nickel alloys offer outstanding resistance to seawater corrosion, biofouling, and erosion. They naturally develop a protective oxide layer that helps extend service life, making them a preferred choice for shipbuilding, offshore platforms, desalination plants, and seawater cooling systems.
What is the difference between a long radius (LR) elbow and a short radius (SR) elbow?
A long radius (LR) elbow has a centerline radius of 1.5 times the pipe diameter, while a short radius (SR) elbow has a radius equal to the pipe diameter. LR elbows provide smoother flow, lower pressure loss, and reduced turbulence, making them the preferred option for most marine and industrial piping systems.
Can you manufacture copper nickel elbows according to customer drawings?
Yes. We support custom manufacturing based on customer drawings or technical specifications. Customized dimensions, wall thicknesses, materials, bending radius, and special requirements can all be produced to suit your project.
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