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

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

1. Product Description

Copper Nickel Flange is a pipe connection component made from copper-nickel alloy through forging and machining processes. It is used to connect, guide, or strengthen two components within a piping system. Copper-nickel alloys primarily consist of copper and nickel. Common grades include 90/10 CuNi (UNS C70600, containing approximately 90% copper and 10% nickel) and 70/30 CuNi (UNS C71500, containing approximately 70% copper and 30% nickel), with small additions of iron and manganese to enhance overall strength and corrosion resistance. Flanges are connected using bolts and specialized gaskets to ensure secure and reliable sealing. They are essential components in marine fluid systems. Common flange types include Weld Neck, Slip-On, Blind, Socket Weld, Threaded, and Lap Joint flanges, which can be selected according to specific operating conditions.

2. Product Applications

Due to their excellent seawater corrosion resistance, Copper Nickel Flanges are widely used in the following fields:

• Shipbuilding and Offshore Engineering: Ship piping systems, seawater cooling systems, ballast water systems, hull fittings, and offshore platform piping connections;

• Desalination: Piping connections and sealing in seawater desalination plants;

• Petrochemical: Chemical processing equipment, oil and gas pipelines, heat exchangers, and condenser piping systems;

• Power and Energy: Power plant condenser and cooling water system piping connections;

• Fire Protection: Offshore fire water system piping connections;

• Valve and Pump Integration: Pipe connections for valves and pumps, and pressure system isolation applications;

• Other Fields: Construction, pharmaceutical, aviation, aquaculture, metallurgical machinery, and more.

3. Product Advantages

1. Superior Corrosion Resistance: Copper-nickel alloys exhibit outstanding corrosion resistance in seawater and brackish water environments. They effectively resist stress corrosion, erosion corrosion, and pitting corrosion. The addition of iron and manganese significantly improves resistance to erosion corrosion in flowing seawater.

2. Excellent Biofouling Resistance: Copper-nickel alloys inherently inhibit the adhesion of marine organisms such as barnacles, algae, and molluscs. This effectively reduces biofouling risks in piping systems and lowers maintenance frequency and costs.

3. High Strength with Good Ductility: The addition of nickel increases the strength and corrosion resistance of copper alloys while maintaining good ductility. This ensures reliable performance under high-pressure conditions.

4. Excellent Weldability: Copper-nickel alloys offer outstanding weldability and fabricability, facilitating on-site installation and piping system modifications.

5. Good High and Low Temperature Performance: Copper Nickel Flanges maintain stable mechanical properties over a wide temperature range.

6. Cost-Effective: 90/10 copper-nickel alloy achieves an effective balance between strength, corrosion resistance, and cost. It is a highly cost-effective material choice for seawater piping systems.

4. Product Functions

Copper Nickel Flanges perform the following core functions in piping systems:

1. Pipe Connection: As critical connecting components in piping systems, they reliably connect two pipe sections or pipes to equipment using bolts and gaskets, ensuring system sealing and integrity.

2. Pressure Sealing: They provide safe and reliable pressure sealing during the transportation of seawater, chemicals, and other fluid media, preventing leakage.

3. System Isolation: They enable pipe section isolation and zoning control in pressure systems, facilitating maintenance and inspection.

4. Flow Guidance: Through the tapered neck design of Weld Neck flanges and similar types, they minimize disruption to fluid flow, reducing turbulence and pressure drop.

5. Structural Reinforcement: They serve as structural support and reinforcement components in piping systems, improving overall stability and durability.

5. Key Technical Parameters​

FAQ

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