Which standard covers copper nickel heat exchanger and condenser tubes?

Copper nickel heat exchanger tubes and condenser tubes are primarily manufactured according to ASTM B111 and ASME SB111 standards. Other international equivalents include EN 12451, BS 2871, and JIS H3300, depending on project and regional requirements.

What sizes are available for copper nickel heat exchanger tubes?

Copper nickel heat exchanger tubes are available in outer diameters ranging from 6 mm to 219.1 mm, with wall thickness from 0.7 mm to 12.7 mm. Tubes are supplied in straight lengths, U-bends, and custom sizes as per project requirements.

What are copper nickel heat exchanger tubes used for?

Copper nickel heat exchanger tubes are used in power plants, marine systems, desalination plants, oil and gas processing, HVAC systems, and chemical industries. Their high resistance to corrosion, biofouling, and seawater makes them ideal for heat transfer applications.

What are the advantages of copper nickel heat exchanger tubes?

Copper nickel heat exchanger tubes offer excellent corrosion resistance, high thermal conductivity, resistance to biofouling, long service life, and low maintenance. They perform reliably in seawater, brackish water, and chemically aggressive environments.

Can you supply copper nickel heat exchanger tubes with Mill Test Certificates?

Yes, copper nickel heat exchanger and condenser tubes are supplied with Mill Test Certificates (MTC) as per EN 10204 3.1. Third-party inspection by agencies such as SGS, Bureau Veritas, and TUV can also be arranged upon request.

Copper Nickel Heat Exchanger and Condenser Tubes Supplier in India

Q: What is the difference between 90/10 and 70/30 copper nickel heat exchanger tubes?

90/10 copper nickel heat exchanger tubes (C70600) offer excellent corrosion resistance and are widely used in marine and industrial applications. 70/30 copper nickel tubes (C71500) provide higher strength and superior resistance to high-velocity seawater and polluted environments, making them ideal for desalination plants and offshore condensers.

Q: Do copper nickel condenser tubes resist biofouling?

Yes, copper nickel condenser tubes naturally resist biofouling due to the formation of a protective oxide layer. This layer prevents the growth of marine organisms such as algae, barnacles, and molluscs, reducing maintenance and eliminating the need for chemical anti-fouling treatments.

Q: What is the maximum operating temperature for Cu-Ni heat exchanger tubes?

Cu-Ni heat exchanger tubes typically operate efficiently at temperatures up to 300 to 315 degrees Celsius, depending on pressure and service conditions. They maintain good thermal conductivity and corrosion resistance in high-temperature industrial applications.

What Are Copper Nickel Heat Exchanger and Condenser Tubes?

Solitaire Overseas is a Mumbai-based manufacturer and exporter of copper nickel heat exchanger tubes and copper nickel condenser tubes, supplying power, marine, oil and gas, and desalination industries in 50+ countries. We were founded in 2000, and have a strong history of punctual delivery and adherence to international quality standards. We offer Cu-Ni heat exchanger tubes that comply with ASTM B338 / ASME SB338 standards, seamless and welded types and 90/10 and 70/30 alloys.

Cu-Ni heat exchanger tubes are renowned for their excellent corrosion, erosion, and abrasion resistance in hostile environments such as seawater, brackish water, chlorides, sulfides and alkalis. The alloy combines high strength with excellent weldability and workability. The seawater resistant Cu-Ni alloys obtain their high resistance to seawater attack by the addition of iron (1.0 to 1.8%) and manganese to stabilise the oxide film that is formed on the surface of the tube. This is the reason why copper nickel condenser tubes are the world's preferred choice for marine heat exchangers, desalination evaporators and power plant condensers.

Cu-Ni is highly stable and a good thermal conductor. It has a high melting point and high thermal expansion coefficient, making it ideal for temperature control in heaters. Cu-Ni heat exchanger tubes are also immune to pitting, crevice and stress corrosion cracking and are well suited to chemical environments containing chlorides, sulfides, alkalis and other aggressive chemicals.

Trusted by EPC contractors, shipyards, and power utilities across 50+ countries including the USA, UAE, Germany, and South Korea.

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Copper Nickel Heat Exchanger Tube Types and Variants
Specifications of Cu-Ni Heat Exchanger and Condenser Tubes
Cu-Ni Heat Exchanger Tube Chemical Composition
Mechanical Properties of Cu-Ni Heat Exchanger Tubes
Copper Nickel Heat Exchanger Tube Equivalent Standards
Request a Quote
Copper Nickel Heat Exchanger Tubes Sizes
Copper Nickel Heat Exchanger Tube Grades
Application Industries
Quality Assurance
Packaging
Frequently Asked Questions

Copper Nickel Heat Exchanger Tube Types and Variants

Solitaire Overseas supplies the following copper nickel heat exchanger and condenser tube types from ready stock and against order:

Type	Description	Key Standard
Seamless Cu-Ni Heat Exchanger Tubes	Cold-drawn for high-pressure heat exchanger service. No weld seam. Suitable for working pressures and elevated temperatures.	ASTM B338 / ASME SB338
Welded Cu-Ni Heat Exchanger Tubes	Seam-welded for general condenser duty. Cost-effective for larger outside diameters.	ASTM B338 / ASME SB338
Cu-Ni U-Bend Tubes	Pre-bent for shell-and-tube heat exchangers. Available in 90/10 and 70/30 grades.	ASTM B338
Cu-Ni Oval Heat Exchanger Tubes	Used in specialised heat transfer geometries where oval cross-section improves surface contact.	ASTM B338
Cu-Ni Condenser Tubes	Marine and power plant condensers. Biofouling-resistant oxide film eliminates need for chemical treatment.	ASTM B338 / ASME SB338
Cu-Ni Precision Tubes	Tight-tolerance OD and wall thickness. Used in instrumentation and finned-tube applications.	ASTM B338

Specifications of Cu-Ni Heat Exchanger and Condenser Tubes

Parameter	Value
Standard	ASTM B338 / ASME SB338
Dimensions	ASTM, ASME and API
Heat Exchanger Tube OD Range	10 mm OD to 50.8 mm OD
Condenser Tube OD Range	6 mm OD to 219.1 mm OD
Condenser Tube Wall Thickness	0.7 mm to 12.7 mm
Heat Exchanger Tube Wall Thickness	0.70 mm to 8.00 mm
Outer Diameter	6.00 mm to 101.60 mm
Length	Up to 20 m (65.62 ft). Custom lengths available on request.
Technique	Seamless (Cold Drawn / Cold Rolling)
Additional Standards	JIS 3463, JIS 3459, DIN 2462, DIN 17458, DIN 17456, GOST 9941
Trade Names	Precision Tube, Welded Cu-Ni U Bending Tube, Heat Exchanger Tubing, Boiler Tubing, Heater Tubing

Cu-Ni Heat Exchanger Tube Chemical Composition

Grade	Cu (%)	Ni (%)	Fe (%)	Mn (%)
90/10 (C70600 / UNS C70600)	Remainder	9.0 to 11.0	1.0 to 1.8	Max 1.0
70/30 (C71500 / UNS C71500)	Remainder	29.0 to 33.0	0.4 to 1.0	Max 1.0

Mechanical Properties of Cu-Ni Heat Exchanger Tubes

Property	90/10 (C70600)	70/30 (C71500)
Tensile Strength (annealed)	52,000 psi (359 MPa)	60,000 psi (414 MPa)
Yield Strength (annealed)	15,000 psi (103 MPa)	20,000 psi (138 MPa)
Elongation	30%	27%
Rockwell B Hardness	55	80 to 120
Thermal Conductivity	40 W/mK	29 W/mK
Density	8.94 g/cm3	8.95 g/cm3

Copper Nickel Heat Exchanger Tube Equivalent Standards

ASTM / ASME	EN / DIN	BS / DEF STAN	Other
ASTM B338 / ASME SB338	EN 12451 / DIN 17456	BS2871 / DEF STAN 02-779	JIS 3463 / GOST 9941

Need a quote for copper nickel heat exchanger or condenser tubes?

Share your outside diameter, wall thickness, grade (90/10 or 70/30), and quantity and we respond within 24 hours.

📞 Call: +91-9619103479
📧 Email: vishal@solitaire-overseas.com

Copper Nickel Heat Exchanger Tubes sizes

Sizes available in standard OD ranges from 6 mm to 219.1 mm
Wall thickness from 0.7 mm to 12.7 mm
Available in straight lengths and U-bends
Custom dimensions and tighter tolerances available upon request

Copper Nickel Heat Exchanger and Condenser Tubes: Application Industries

Power Plants: Copper nickel condenser tubes are widely used in steam surface condensers due to their excellent resistance to erosion-corrosion and long service life in high-flow cooling systems.
Marine and Offshore: 90/10 Cu-Ni heat exchanger tubes are extensively used in seawater cooling, shipbuilding, and offshore platforms due to their natural resistance to biofouling.
Desalination: 70/30 copper nickel tubes are preferred in high-salinity and high-velocity brine environments in MSF and RO plants.
Oil and Gas: Suitable for offshore cooling systems, hydrocarbon processing, and sour gas environments where corrosion resistance is critical.
Chemical Industry: Performs well in chloride-rich and chemically aggressive process streams.
Food Processing: Copper alloys offer antimicrobial properties, making them suitable for hygienic heat transfer applications.
Heating & HVAC: Widely used in industrial heat exchangers, refrigeration systems, and condensers.

Quality Assurance of Copper Nickel Heat Exchanger and Condenser Tubes

All copper nickel heat exchanger and condenser tubes undergo mandatory testing in accordance with ASTM B338 requirements, including hydrostatic testing, dimensional inspection (outside diameter, wall thickness, length), eddy current testing for seamless tubes, PMI (Positive Material Identification), and mechanical testing (tensile and hardness). Mill Test Certificates (MTC) to EN 10204 3.1 are issued with every order. Third-party inspection by SGS, BV, or TUV is accommodated on request.

ISO 9001:2015 certified. Products conform to ASTM B338 / ASME SB338. Third-party inspection by SGS, BV, or TUV is available on request.

Test parameters covered at Solitaire Overseas include thermal performance testing, natural circulation stability tests, mechanical testing, hardness testing, positive material identification, chemical analysis, destructive and non-destructive testing, intergranular corrosion testing, ultrasonic testing, radiographic testing, pitting corrosion testing, and visual inspection.

Packaging of Copper Nickel Heat Exchanger and Condenser Tubes

All copper nickel heat exchanger tubes are bundled, plugged at both ends, and wrapped in moisture-resistant polyethylene film before packing. Outer packaging uses wooden boxes, crates, pallets, and cartons as required by destination and order size. Export packing complies with ISPM-15 phytosanitary requirements for wooden crates. Additional cushioning is placed to prevent movement and mechanical damage during transit and export shipping.

Frequently Asked Questions: Copper Nickel Heat Exchanger Tubes

What is the difference between 90/10 and 70/30 copper nickel heat exchanger tubes?

90/10 (C70600) offers excellent corrosion resistance at lower cost and is the standard for most marine and industrial heat exchanger applications. 70/30 (C71500) provides higher tensile strength and superior resistance to high-velocity and polluted seawater, making it the preferred grade for desalination evaporators and naval condensers. Both grades are available from Solitaire Overseas in seamless and welded forms.

Which standard covers copper nickel heat exchanger tubes?

The primary standard is ASTM B338 (Seamless and Welded Copper and Copper-Alloy Heat-Exchanger and Condenser Tubes). The ASME equivalent is SB338. European buyers may reference EN 12451. Naval and defence procurement in the UK uses DEF STAN 02-779. JIS 3463 covers Japanese market requirements. All these standards are supported by Solitaire Overseas.

Do copper nickel condenser tubes resist biofouling?

Yes. Cu-Ni alloys form a natural protective oxide film that inhibits biofouling organisms including barnacles, molluscs, and algae. This makes copper nickel condenser tubes the preferred choice for marine condensers and shipboard heat exchangers where chemical anti-fouling treatment is undesirable or restricted.

What is the maximum operating temperature for Cu-Ni heat exchanger tubes?

ASTM B338 Cu-Ni tubes are typically rated for continuous service up to 315°C (600°F). For high-pressure feedwater heaters or applications above this range, please share your design temperature and pressure with our technical team for confirmation.

What outside diameter and wall thickness ranges are available?

Heat exchanger tubes are available from 10 mm OD to 50.8 mm OD with wall thickness from 0.70 mm to 8.00 mm. Condenser tubes are available from 6 mm OD to 219.1 mm OD with wall thickness from 0.7 mm to 12.7 mm. Custom dimensions are produced to order. Standard lengths are up to 20 metres (65.62 ft).

Can Solitaire Overseas supply Mill Test Certificates with orders?

Yes. Mill Test Certificates to EN 10204 3.1 are issued as standard with every order. Third-party inspection and certification by SGS, Bureau Veritas, or TUV Rheinland can be arranged on request prior to dispatch.

Request a Quote for Cu-Ni Heat Exchanger Tubes

Call +91-9619103479 or email vishal@solitaire-overseas.com to request a quote for copper nickel heat exchanger tubes or condenser tubes. We supply 90/10 and 70/30 grades in seamless and welded form, with worldwide export and Mill Test Certificates to EN 10204 3.1.

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