CuNi 70/30 Pipes Supplier │ ASTM B466 UNS C71500 │ Desalination & Navy Ship

Q: Do you supply mill test certificates (MTC) and third-party inspection with CuNi 70/30 pipes?

Yes. All CuNi 70/30 ASTM B466 pipes are supplied with EN 10204 3.1 mill test certificates. Third-party inspection by SGS, Bureau Veritas, or TÜV is available on request. NABL-approved lab reports are also provided.

Q: What pipe sizes and schedules are available for ASTM B466 CuNi 70/30 pipes?

OD range: 1/2" to 6". Wall thickness: 0.15 mm to 1.50 mm. Available schedules: SCH20, SCH30, SCH40, STD, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS. Seamless, welded, and ERW forms stocked. Custom sizes and lengths supplied against project requirements.

Cu-Ni 70/30 Pipes Supplier & Exporter

Solitaire Overseas is a trusted copper nickel 70 30 pipes supplier, stockist, and exporter based in Mumbai, India. We supply ASTM B466 / ASME SB466 UNS C71500 copper nickel 70/30 pipes in seamless, welded, and ERW forms to clients across the Gulf, Southeast Asia, Europe, and beyond. Our stock is maintained mill-certified, with full traceability and third-party inspection available on request. We are an ISO-certified organisation committed to on-time delivery and competitive pricing for project quantities and spot requirements alike.

Browse our complete range ofCupro Nickel Pipes Supplier & Exporter products, including theCupro Nickel 90/10 Pipes Supplier & Exporter for lower-velocity seawater applications. For complete piping systems, we also supplyCopper Nickel 70/30 Pipe Fittings andCopper Nickel 70/30 Flanges.

CuNi 70/30 (UNS C71500) pipes contain 70% copper and 30% nickel, with controlled additions of iron and manganese. This composition gives the alloy superior erosion-corrosion resistance at high seawater flow velocities, the primary reason naval architects and desalination plant engineers specify 70/30 over 90/10 for high-velocity lines. OurCupro Nickel 70/30 Heat Exchanger Condenser Tubes are also available for brine heater and MSF/MED desalination applications. Request a quote or MTC along with your RFQ.

Copper Nickel 70 30 Round Pipe

Copper Nickel 70_30 Round Tube

Copper Nickel 70_30 Seamless Tube

Copper Nickel 70_30 Welded Pipe

Copper Nickel 70_30 Welded Tube

Cu-Ni 70_30 Seamless Pipe

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Cu-Ni 70/30 Pipes Supplier & Exporter
Specification of Cu-Ni 70/30 Pipes
Types of Copper Nickel 70/30 Pipes & Tubes
Cu-Ni 70/30 Pipes Equivalent Grades (UNS C71500)
Cu-Ni 70/30 Pipes Chemical Composition
Cu-Ni 70/30 Pipes Mechanical & Physical Properties
70 30 CUNI Pipe Dimensions
Copper Nickel 70/30 Pipe Size Chart
Copper Nickel 70/30 Pipe Pressure Rating
Cu-Ni 70/30 Pipe Applications
Testing of CuNi 90/10 Pipes
Packaging of CuNi 70/30 Pipes
Related Products
Frequently Asked Questions

Specification of Cu-Ni 70/30 Pipes

Property	Details
Outside Diameter (OD)	1/2" to 6"
Thickness	0.15 mm to 1.50 mm
Length	Single Random, Double Random & Required Length
Schedule	SCH20, SCH30, SCH40, STD, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type	Welded / ERW / Seamless / Fabricated
Manufacturing Method	Cold Rolled / Hot Rolled
Standards	ASTM B466, ASTM B467, ASTM B111, ASTM B552, ASTM B543, ASTM B395 / ASME SB466, SB467, SB111, SB552, SB543, SB395
ASME / ASTM Equivalent	ASME SB466
Forms	Square, Round, Hydraulic, Rectangular, Coil, U Shape, Pancake Coil
Finish	Cold Finish, Bright Annealed, Annealing, Pickling, Polished
Testing	Chemical Testing, PMI Testing, Mechanical Testing, Visual Inspection, NABL Approved Lab Reports
End Type	Plain End, Beveled End, Threaded
Applications / Uses	Salt Water Piping, Propeller Sleeves, Evaporator Tubes, Pump Bodies

Types of Copper Nickel 70/30 Pipes & Tubes

We supply the full range of CuNi 70/30 pipe and tube forms. Click any product type below to view specifications and request a quote:

Request a Quote for Copper Nickel 70/30 Pipes

Supplying ASTM B466 / ASME SB466 CuNi 70/30 pipes (UNS C71500) globally. Large-volume orders welcome. Our team responds within 24 hours with pricing, MTRs, and dimensional data.

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Cu-Ni 70/30 Pipes Equivalent Grades (UNS C71500)

Standard	UNS	Werkstoff Nr.
Cu-Ni 70/30	C71500	2.0882

Cu-Ni 70/30 Pipes Chemical Composition

Element	Cu-Ni 70/30
Cu	65.0 min
Mn	1.0 max
Pb	0.5 max
Ni	29–33 max
Fe	0.4–1.0
Zn	1 max

Cu-Ni 70/30 Pipes Mechanical & Physical Properties

Property	Cu-Ni 70/30
Density	0.323 lb/in³ at 68°F
Melting Point	2260°F
Tensile Strength	50,000 psi
Yield Strength (0.2% Offset)	90–1000 psi
Elongation	30%

70 30 CUNI Pipe Dimensions

Size (in)	Wall Thickness (in)	Outside Diameter (in)	Approx Weight (lbs/ft)
3/8 OD	0.049	0.38	0.2
2-1/2	0.38	2.88	12.1
1/4 OD	0.035	0.25	0.1
1/4	0.072	0.54	0.43
1/2	0.120	0.84	1.1
3/8	0.095	0.68	0.19
1	0.180	1.32	2.61
1-1/4	0.220	1.66	2.18
3/4	0.148	1.05	1.71
1-1/2	0.25	1.9	5.25
2	0.340	2.38	8.85
3	0.46	3.5	18.7

Copper Nickel 70/30 Pipe Size Chart

Wall	Sizes ( O.D.)
.010	1/16", 1/8", 3/16"
.020	1/16", 1/8", 3/16", 1/4", 5/16", 3/8"
.012	1/8"
.016	1/8", 3/16"
.028	1/8", 3/16", 1/4", 5/16", 3/8", 1/2", 3/4", 1", 1 1/2", 2"
.035	1/8", 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
.049	3/16", 1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/8", 1 1/4", 1 1/2", 1 5/8", 2", 2 1/4"
.065	1/4", 5/16", 3/8", 1/2", 16", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 3/4", 2", 2 1/2", 3"
.083	1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 1 5/8", 1 7/8", 2", 2 1/2" ,3"
.095	1/2", 5/8", 1", 1 1/4", 1 1/2", 2"
.109	1/2", 3/4", 1", 1 1/4", 1 1/2", 2"
.120	1/2", 5/8", 3/4", 7/8", 1", 1 1/4", 1 1/2", 2", 2 1/4", 2 1/2", 3"
.125	3/4", 1", 1 1/4", 1 1/2", 2", 3", 3 1/4"
.134	1"
.250	3"
.375	3 1/2"

Copper Nickel 70/30 Pipe Pressure Rating

Pipe O.D. in.	.028	.030	.035	.049	.065	.083	.095	.109	.120	0.134
Working Pressure (psig)
1/8	2700	3000	3600
3/16	1800	1900	2300	3400
1/4	1300	1400	1600	2700	3500
5/16				1300	2200	2700
3/8				1000	1600	2200
1/2				800	1100	1600	2100
5/8					900	1200	1600	1900
3/4					700	1000	1300	1500	1800
7/8					600	800	1100	1300	1500
1					500	700	900	1100	1300	1500
1 1/8						600	800	1000	1100	1300

Tube O.D. in.	.028	.030	.035	.049	.065	.083	.095	.109	.120	0.134
Working Pressure (psig)
1/8	2700	3000	3600
3/16	1800	1900	2300	3400
1/4	1300	1400	1600	2700	3500
5/16				1300	2200	2700
3/8				1000	1600	2200
1/2				800	1100	1600	2100
5/8					900	1200	1600	1900
3/4					700	1000	1300	1500	1800
7/8					600	800	1100	1300	1500
1					500	700	900	1100	1300	1500
1 1/8						600	800	1000	1100	1300

Cu-Ni 70/30 Pipe Applications

CuNi 70/30 pipes are widely specified in seawater and marine environments due to their high-velocity erosion-corrosion resistance. For a deeper look at end-use sectors, see our blog:What are Copper Nickel Pipes Used For.

Food Processing Industry
Fabrication Industry
Oil and Gas Industry
Chemical Industry
Plumbing
General Purpose Applications
Heating
Water Supply Systems
Power Plant
Paper & Pulp Industry

Testing of CuNi 70/30 Pipes

Mechanical Testing such as Tensile of Area, Hardness Test, Chemical Analysis – Spectro Analysis, Positive Material Identification tests are conducted. Other tests include Micro and Macro Test, Intergranular Corrosion (IGC) Test, Flattening Test, Flaring Test, and Pitting Resistance Test.

Packaging of CuNi 70/30 Pipes

We understand the importance of CuNi 70/30 Pipes packaging, especially during international shipments where the delivery has to pass through a number of channels to arrive at the final destination. We take proper care of packing. Usually pipes are packed in wooden cases/pallets and wrapped in environmental poly bags.

Frequently Asked Questions

What is the UNS number and ASTM standard for Copper Nickel 70/30 pipes?

UNS C71500. Covered under ASTM B466 (seamless) and B467 (welded), with ASME equivalents SB466 and SB467. Werkstoff Nr. 2.0882. Also referred to as Cupro Nickel 70/30 or CuNi 70/30.

Why is CuNi 70/30 preferred over 90/10 for high-velocity seawater systems?

The higher nickel content (30% vs 10%) gives UNS C71500 superior erosion-corrosion resistance at elevated flow velocities — the key reason naval, desalination, and brine heater engineers specify 70/30.

Do you supply mill test certificates (MTC) and third-party inspection?

Yes. All CuNi 70/30 ASTM B466 pipes ship with EN 10204 3.1 MTC. Third-party inspection by SGS, Bureau Veritas, or TÜV is available on request. NABL-approved lab reports also provided.

What pipe sizes and schedules are available for ASTM B466 CuNi 70/30?

OD: 1/2" to 6". Wall: 0.15 mm to 1.50 mm. Schedules: SCH20 to XXS. Seamless, welded, and ERW forms stocked. Custom sizes, lengths, and finishes supplied against project requirements.

Ready to Source Copper Nickel 70/30 Pipes? Let's Talk.

Solitaire Overseas supplies ASTM B466 / ASME SB466 CuNi 70/30 pipes (UNS C71500) in seamless and welded form to desalination, naval, and high-velocity seawater projects worldwide. Contact us for competitive pricing, full MTRs, and fast lead times.

Get a Quote Today Contact Solitaire Overseas