Product Description
DLSS supplies Copper-Nickel ASTM B111 C70600 (O61) seamless low finned tubes, specially designed for oil cooler pipe applications. These tubes are manufactured with integral low fins on the outer surface to enhance heat transfer efficiency while maintaining the excellent seawater and oil corrosion resistance of CuNi 90/10 alloy.
Material C70600 (UNS C70600, CuNi 90/10) consists of 90% copper and 10% nickel, with iron and manganese additions that provide superior resistance to seawater corrosion, erosion, and biofouling. The O61 annealed condition ensures good ductility and workability, making the tubes suitable for bending and fabrication in cooler systems.
Specifications
| Item | Details |
|---|---|
| Standard | ASTM B111 |
| Material | C70600 (CuNi 90/10) |
| Condition | O61 (Annealed) |
| Type | Seamless Low Finned Tube |
| Surface | Integral fins on OD (Low Finned) |
| Application | Oil cooler tubes, heat exchangers, condensers, seawater cooling systems |
Key Features
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Enhanced Heat Transfer – Low fins increase surface area for efficient thermal exchange.
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Excellent Corrosion Resistance – CuNi 90/10 alloy resists seawater, oil, and brine corrosion.
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Seamless Construction – Superior strength, reliability, and long service life.
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Workability (O61 Condition) – Good ductility and ease of fabrication.
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Proven Performance – Widely used in marine, oil cooler, and industrial heat exchanger systems.
Applications
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Oil Cooler Pipes in marine engines and industrial systems
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Heat Exchangers for oil, seawater, and chemical media
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Desalination Plants – brine-resistant cooler tubes
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Power Plant Condensers – seawater-cooled tube bundles
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Offshore Oil & Gas – cooling systems in harsh seawater environments
Why Choose DLSS?
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Supply of low finned, high finned, and plain CuNi tubes according to ASTM standards.
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Strict quality control with 100% Eddy Current and Hydrostatic Testing.
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Export-ready packaging – bundled or wooden cases with end caps.
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Global supply experience – trusted supplier for marine, oil & gas, and power generation projects.
Frequently Asked Questions (FAQ)
Q1: What is the advantage of low finned tubes?
A1: Low fins increase external surface area, improving heat transfer efficiency while maintaining compact cooler design.
Q2: Why is C70600 used for oil cooler pipes?
A2: CuNi 90/10 has excellent resistance to seawater corrosion, oil fouling, and erosion, ensuring long-term durability.
Q3: Can DLSS supply both low finned and plain CuNi tubes?
A3: Yes, we provide plain, low finned, and high finned copper-nickel tubes according to client requirements.
Q4: What testing is carried out?
A4: 100% Eddy Current and Hydrostatic Tests, with third-party inspection available upon request.
