ASME B16.5 CuNi 70/30 Forged Flange, Class 150 Socket Weld, Marine Grade SWRF

ASME B16.5 CuNi 70/30 Forged Flange, Class 150 Socket Weld, Marine Grade SWRF

1.Product Description 

The Copper Nickel Socket Weld Flange is manufactured from high-quality 70/30 Copper Nickel Alloy (CuNi 70/30, UNS C71500) in compliance with ASME B16.5 standard. This forged flange features a Class 150 pressure rating and socket weld connection type. The socket weld design allows the pipe to be inserted into a recessed area of the flange and welded around the outer diameter, creating a strong, leak-proof permanent connection ideal for high-pressure systems . The 70/30 copper-nickel alloy consists of 70% copper and 30% nickel, with trace amounts of iron and manganese, providing excellent mechanical properties and corrosion resistance

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 2. Applications 

Due to the alloy's exceptional resistance to seawater corrosion and biofouling, CuNi 70/30 flanges are widely used in :

• Marine & Offshore Engineering: Seawater cooling systems, shipbuilding, desalination plants, offshore platforms

• Petrochemical Industry: Chemical processing, heat exchangers, pressure vessels

• Power Generation: Nuclear and thermal power plant cooling systems

• Naval Applications: Naval ship piping systems (DEF STAN 02-879 compliant)

• Industrial Applications: Hydraulic pipelines, firewater systems, fish farming cages 

3. Product Functions 

The Copper Nickel Socket Weld Flange serves the following functions in piping systems:

• Pipe Connection: Provides a reliable, leak-proof connection between pipes, valves, pumps, and other equipment

• System Access Point: Allows for easy disassembly and maintenance of piping systems

• Pressure Containment: Safely contains system pressure up to Class 150 rating

• Flow Direction Control: Facilitates changes in piping direction when used with elbows or tees

• Equipment Isolation: When used with blind flanges, can isolate sections of the piping system

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​4.Technical Specifications

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.