C71500 Copper Nickel Socketweld Flange Class 150, Cupro Nickel 70/30 RF SW Flange
C71500 Copper Nickel Socketweld Flange Class 150, Cupro Nickel 70/30 RF SW Flange
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 approximately 70% copper and 30% nickel, with trace amounts of iron (0.6-1.0%) and manganese (0.5-1.5%), providing excellent mechanical properties and corrosion resistanc.
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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 :
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Marine & Offshore Engineering: Seawater cooling systems, shipbuilding, desalination plants, offshore platforms
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Petrochemical Industry: Chemical processing, heat exchangers, pressure vessels
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Power Generation: Nuclear and thermal power plant cooling systems
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Naval Applications: Naval ship piping systems (DEF STAN 02-879 compliant)
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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 :
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Pipe Connection: Provides a reliable, leak-proof connection between pipes, valves, pumps, and other equipment via bolting with bolts and specialized gaskets to ensure secure pressure-tight seals
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System Access Point: Allows for easy disassembly and maintenance of piping systems
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Pressure Containment: Safely contains system pressure up to Class 150 rating (and higher for other classes)
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Flow Direction Control: Facilitates changes in piping direction when used with elbows or tees
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Equipment Isolation: When used with blind flanges, can isolate sections of the piping system
4.Technical Specifications
| Parameter | Specification |
| Material Grade | CuNi 70/30 (UNS C71500, DEF STAN 02-879 Annex B Grade 1) |
| Standard | ASME B16.5 / ANSI B16.5 |
| Pressure Class | Class 150 (also available: 300#, 400#, 600#, 900#, 1500#, 2500#) |
| Connection Type | Socket Weld (SW) |
| Size Range | 1/2" to 24" (DN15-DN600) |
| Face Type | Raised Face (RF) / Flat Face (FF) / Ring Joint (RJ) |
| Chemical Composition | Cu: 70% (bal.), Ni: 29.0-32.0%, Mn: 0.50-1.50%, Fe: 0.60-1.00%, C: ≤0.06%, Others: ≤0.30% |
| Tensile Strength (min) | 350 MPa |
| Yield Strength 0.2% (min) | 130 MPa |
| Elongation (min) | 36% |
| Density | 0.323 lb/in³ (8.94 g/cm³) at 68°F |
| Max Operating Temperature | 300°C (572°F) |
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.
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