CuNi 70/30 Copper Nickel Pipe For Flange Service ASME B16.5 Seamless

Place of Origin Shanghai,China
Brand Name TOBO
Certification ISO/TUV/SGS
Model Number Copper Nickel Pipe
Minimum Order Quantity 1PC
Price Negotiable
Packaging Details Standard Shipping Package
Delivery Time 15-30 Workdays
Payment Terms T/T, Western Union
Supply Ability 10Ton/Month
Product Details
Product Name CuNi 70/30 Copper Nickel Pipe For Flange Service ASME B16.5 Seamless Thickness 0.5mm - 20mm
Method Hot Rolled Shape Round.square.Rectangle
Model A182 F53 Temperaturerange -200°C To 400°C
Coating Brass State Hard
Mechanicalproperties Tensile Strength Approx. 310-450 MPa Application Water Tube
Thermalconductivity Approximately 29 W/m·K Section Shape Round
Size 1/2 Package As Customer Demands
Specification C11000 C10200 C12000 C12200 Outside Diameter 2mm~914mm
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CuNi 70/30 seamless pipe

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Copper Nickel flange pipe

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ASME B16.5 CuNi pipe

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Product Description

CuNi 70/30 Copper Nickel Pipe For Flange Service ASME B16.5 Seamless

 

1.Product Description

Copper-nickel pipe is a wrought alloy tube made from copper with nickel, iron, and manganese. The two most common compositions are 90% copper / 10% nickel (CuNi 90/10) and 70% copper / 30% nickel (CuNi 70/30). These pipes are renowned for their outstanding resistance to flowing seawater, biofouling, and stress corrosion, making them the preferred choice for critical marine and industrial fluid systems.

 

2.Product Functions

  • Shipbuilding: Seawater cooling, bilge & ballast lines, sanitary systems.

  • Power Plants: Steam surface condensers, feedwater heaters, and turbine oil coolers.

  • Desalination: Multi-stage flash (MSF) and reverse osmosis pretreatment piping.

  • Offshore Oil & Gas: Hydraulic control lines, fire main systems, and platform drain lines.

  • Industrial: Brine heaters in salt production, chemical tank cleaning lines.

​3.Product Advantages

  • Unmatched Seawater Corrosion Resistance: Performs in polluted, high-velocity, and turbulent seawater where many stainless steels fail.

  • Natural Biofouling Resistance: Reduces slime and barnacle attachment, lowering flow friction and cleaning frequency.

  • Excellent Weldability & Formability: Can be welded, brazed, bent, flared, and expanded without cracking.

  • High Resistance to Ammonia & Chlorides: Unaffected by typical chloride stress corrosion cracking.

  • Proven Longevity: Service life of 30–50 years in demanding marine environments.

CuNi 70/30 Copper Nickel Pipe For Flange Service ASME B16.5 Seamless 0

​4.Key Product Parameters

Parameter CuNi 90/10 (UNS C70600) CuNi 70/30 (UNS C71500)
Nickel Content 9.0 – 11.0% 29.0 – 33.0%
Iron Content 1.0 – 1.8% 0.4 – 1.0%
Manganese Content ≤ 1.0% ≤ 1.0%
Tensile Strength (min) 310 MPa (45 ksi) 480 MPa (70 ksi)
Yield Strength (min) 110 MPa (16 ksi) 170 MPa (25 ksi)
Elongation (min) 30% 30%
Hardness (Rockwell B) ≤ 80 HRB ≤ 90 HRB
Thermal Conductivity 45 W/(m·K) 29 W/(m·K)
Electrical Resistivity 19 µΩ·cm 34 µΩ·cm
Density 8.94 g/cm³ 8.94 g/cm³
Melting Range 1100 – 1150°C 1170 – 1240°C
Available OD Range 6 – 610 mm 6 – 610 mm
Max Operating Pressure Up to 5000 psi (schedule dependent) Up to 6000 psi (schedule dependent)

 

FAQ

1. Are you trading company or manufacturer ?
We are manufacturer ,You can see the  certification.
2. How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
3. Do you provide samples ? is it free or extra ?
Yes, we could offer the sample for free charge but need pay the cost of freight.
4. What is your terms of payment ?
Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.