China Copper Nickel Fittings manufacturer
TOBO INDUSTRIAL (SHANGHAI) CO., LTD
TOBO INDUSTRIAL (SHANGHAI) CO., LTD
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CuNi 70/30 Socket Weld Flange Class150, Forged C71500 Seawater & Biofouling Resistant

CuNi 70/30 Socket Weld Flange Class150, Forged C71500 Seawater & Biofouling Resistant

Place of Origin Shanghai,China
Sizerange 1/2 inch to 48 inches
Austenitic Stainless C71500
Supply Ability 10Ton/Month
Warranty 1 year
Packaging Details Standard Shipping Package
Certification ISO/TUV/SGS
Use Machanical parts
Level AAA
Standard ASTM B466
Minimum Order Quantity 1PC
Connectiontype Welded
Leakage Rate Zero Leakage
Easy Installation Yes
Connection Butt Weld, Threaded, Socket Weld
Weldability Good
Durability Long-lasting
Price Negotiable
Product name CuNi 70/30 Socket Weld Flange Class150, Forged C71500 Seawater & Biofouling Resistant
Nickelcontent 30% Nickel
Sealing Surface Form RF MFM TG RJ
Compressive Strength strong
Density 8.9 g/cm³
Payment Terms T/T, Western Union
Country Of Origin China
Temperature Rating -196°C to 300°C
Standardscompliance ASTM B466, ASTM B466M, ASME B16.5
Surface Treatment Polishing, Sand Blasting, etc.
Delivery Time 15-30 Workdays
Temperaturerange -50°C to 200°C
Special Functions Good elasticity, low steel value
Process Casting, Forging, etc.
Standard Of Execution HG/T20592-2009
Brand Name TOBO
Surfacefinish Smooth, polished or as per customer requirement
Model Number Copper Nickel Flange
Customized Support OEM
Technics Casting
Mode Of Connection welding
Surface Paint Spraying
Corrosionresistance High resistance to seawater corrosion
Standards ASTM B151, ASME B16.5
Pressure 150#-1500#
Link Mode Forging
Flange Type Weld Neck
Detailed Product Description

CuNi 70/30 Socket Weld Flange Class150, Forged C71500 Seawater & Biofouling Resistant
 
1.Product Description 

The Copper Nickel Flange is a high-performance piping component manufactured from Copper-Nickel alloy (commonly 90/10 or 70/30 composition). It is designed to connect pipes, valves, pumps, and other equipment to form a complete piping system. Due to its excellent resistance to corrosion in marine environments, this flange is the industry standard for naval architecture and offshore engineering.


 2. Applications 

  • Marine Engineering: Seawater cooling pipelines, ballast systems, firefighting systems, shipbuilding.

  • Offshore & Onshore: Oil and gas platforms, desalination plants, power stations.

  • Industrial: Heat exchangers, condensers, and equipment requiring resistance to high-velocity seawater corrosion.

3. Product Functions 

  • Connection & Extension: Provides reliable, leak-proof mechanical connection for piping systems.

  • Access & Maintenance: Blind flanges allow easy access to pipe ends or pressure vessels for inspection and cleaning.

  • Pressure Isolation: Isolates specific sections of a piping system without draining the entire system.

  • Size & Direction Change: Facilitates changes in pipe diameter (reducing flanges) or direction when combined with fittings.

​4.Technical Specifications

ParameterValue
Material GradesUNS C70600 (90/10 Cu-Ni), UNS C71500 (70/30 Cu-Ni)
StandardsANSI/ASME B16.5, ASME B16.47, DIN, BS, JIS, EN
Pressure RatingsClass 150 / 300 / 600 / 900 / 1500 / 2500
Nominal SizeDN15 (1/2″) to DN1200 (48″)
Flange TypesWeld Neck (WN), Slip-On (SO), Blind (BL), Lap Joint (LJ), Socket Weld (SW), Threaded (SCRD)
Tensile Strength (70/30)≥ 345 MPa (≥ 50 ksi)
Yield Strength (70/30)≥ 130 MPa (≥ 20 ksi)
Elongation (70/30)≥ 30%
Density8.94 g/cm³ (0.323 lb/in³)
Melting Range1150℃ – 1200℃ (2100℉ – 2190℉)
Face TypeRaised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

 
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.

Product Tags: CuNi 70/30 socket weld flange   C71500 seawater resistant flange   Class150 forged copper nickel flange  
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