CuNi 70/30 Socket Weld Flange ASME B16.5 Class150, Marine Corrosion Resistant

Place of Origin Shanghai,China
Brand Name TOBO
Certification ISO/TUV/SGS
Model Number Copper Nickel Flange
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 Socket Weld Flange ASME B16.5 Class150, Marine Corrosion Resistant Surfacefinish Smooth, Polished Or As Per Customer Requirement
Density 8.9 G/cm³ Connection Type Welding
Shape Elbow Press 20Bar
Length 75 MM Temperaturerange -196°C To 200°C (-320°F To 392°F)
Machinability Good Grade 90/10 Copper Nickle (UNS 70600)
Application Pipe Lines Connect Weldability Good
Thread Type ASME B1.20.1(NPT) Size Rane 1/2
Thickness 3х2,5 Mm Size Range 1/2
Surface Treatment Polishing, Sand Blasting, Etc. Link Mode Quick Assembly, Welding, Etc
Color Reddish-brown Austenitic Stainless C71500
Corrosion Resistance Excellent Standard ASTM B466
Type Flange Size 3/4
Strength High Sealing Surface Form RF MFM TG RJ
Inspection 100% X-ray, Dye Penetrant, Ultrasonic Corrosionresistance Excellent In Seawater And Marine Environments
Surface Paint Spraying
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CuNi 70/30 socket weld flange

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marine corrosion resistant flange

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ASME B16.5 Class150 flange

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Product Description

CuNi 70/30 Socket Weld Flange ASME B16.5 Class150, Marine Corrosion Resistant
 
1.Product Description 
The Copper Nickel Flange is a high-strength, corrosion-resistant piping component manufactured from copper-nickel alloy, predominantly UNS C70600 (90/10) and UNS C71500 (70/30). These flanges are designed to connect pipes, valves, fittings, and equipment in severe service environments, especially where exposure to seawater, brine, or aggressive cooling water is expected. They combine excellent mechanical properties with superior resistance to marine corrosion and biofouling.
 
 2. Applications 

  • Shipbuilding & Marine: Seawater cooling, ballast, fire fighting, sanitary, and hydraulic lines.

  • Offshore Platforms: Topside process piping, firewater ring mains, deluge systems.

  • Desalination Plants: High-temperature brine lines in MSF (Multi-Stage Flash) and MED (Multi-Effect Distillation) units.

  • Power Generation: Cooling water intake and discharge lines, condenser connections.

  • Chemical Industry: Heat exchangers and piping for dilute acids, alkalis, and salt solutions.

 3. Product Functions 

  • Pipe Connection: Provides a strong, detachable mechanical joint between pipe segments or pipe-to-equipment.

  • Leakage Prevention: When mated with a suitable gasket, creates a pressure-containing seal against fluid escape.

  • System Access: Blind flanges seal pipe ends, allowing easy opening for future expansion, inspection, or cleaning.

  • Stress Reduction (WN type): Weld neck flanges provide a smooth transition from pipe to flange, reducing stress concentration and turbulence.

CuNi 70/30 Socket Weld Flange ASME B16.5 Class150, Marine Corrosion Resistant 0

​4.Technical Specifications

ParameterValue
Material GradesUNS C70600 (CuNi 90/10), UNS C71500 (CuNi 70/30)
Manufacturing StandardsASME B16.5, ASME B16.47 Series A/B, DIN 263x, EN 1092-1, BS 4504, JIS B2220
Pressure Classes150#, 300#, 600#, 900#, 1500#, 2500#
Nominal Size1/2″ ~ 48″ (DN15 ~ DN1200)
Flange TypesWN, SO, BL, LJ, SW, Threaded (NPT)
Facing TypesRF, FF, RTJ, T&G
Tensile Strength (70/30)≥ 345 MPa (≥ 50 ksi)
Yield Strength (70/30)≥ 130 MPa (≥ 19 ksi)
Elongation (70/30)≥ 30%
Hardness (70/30)≤ 85 HRB
Density8.94 g/cm³ (0.323 lb/in³)
Melting Range1150 ~ 1200℃ (2102 ~ 2192℉)
MagneticNon-magnetic

 
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.