Marine Grade CuNi 70/30 SWRF Flange Class150, Corrosion Resistant Forged C71500
Marine Grade CuNi 70/30 SWRF Flange Class150, Corrosion Resistant Forged C71500
1.Product Description
The Copper Nickel Flange is a precision-engineered piping component manufactured from Copper-Nickel alloy, primarily grades 90/10 (UNS C70600) and 70/30 (UNS C71500). It is used to connect pipes, valves, pumps, and other equipment to form a leak-proof and durable piping system. Due to its outstanding resistance to seawater and biofouling, it is widely regarded as the standard material for marine, offshore, and desalination applications.
2. Applications
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Marine & Shipbuilding: Seawater cooling systems, ballast lines, firewater systems, sanitary lines.
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Offshore Oil & Gas: Topside piping on platforms, subsea equipment connections.
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Desalination & Power: Evaporators, heat exchangers, condensers in MSF and MED desalination plants.
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Industrial: Chemical processing where resistance to brackish water or diluted acids is required.
3. Product Functions
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Mechanical Connection: Provides strong, detachable joints between pipes and equipment.
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System Sealing: When combined with a suitable gasket, creates a pressure-tight seal against fluid leakage.
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Easy Dismantling: Allows sections of the piping system to be removed for maintenance, repair, or modification.
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Blind Function: Blind flanges close off pipe ends or vessel openings for pressure testing or future extension.
4.Technical Specifications
| Parameter | Value / Range |
| Material Grades | UNS C70600 (90/10 Cu-Ni), UNS C71500 (70/30 Cu-Ni) |
| Applicable Standards | ANSI B16.5, ASME B16.47, DIN, BS, JIS, EN1092-1 |
| Pressure Ratings | Class 150 / 300 / 600 / 900 / 1500 / 2500 |
| Size Range | DN15 (1/2") to DN1200 (48") |
| Flange Types | Weld 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% |
| Density | 8.94 g/cm³ (0.323 lb/in³) |
| Melting Point | 1150℃ – 1200℃ (2100℉ – 2190℉) |
| Facing Types | Raised Face (RF), Flat Face (FF), Tongue & Groove (T&G), 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.
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