Forged CuNi 70/30 Copper Nickel Tee Seawater System Pipe Fitting ASME B16.5 Class150

Forged CuNi 70/30 Copper Nickel Tee Seawater System Pipe Fitting ASME B16.5 Class150

1. Product Description

Copper Nickel Tee (CuNi Tee) is a T-shaped pipe fitting made of copper-nickel alloy, specially designed for seawater, marine, and corrosive media piping systems. Common material grades are C70600 (90/10 CuNi) and C71500 (70/30 CuNi), offering excellent seawater corrosion resistance and anti-biofouling performance.

Copper Nickel Tees are classified into equal tee and reducing tee by structure; seamless hot-pushed tee, die-forged tee, and welded tee by manufacturing process; and butt weld, socket weld, and threaded tee by connection type. Products can be manufactured to ASME, DIN, EEMUA, and MSS standards, with classification society certification such as ABS, DNV, CCS, and LR available. Factory direct supply, custom sizes, special wall thicknesses, and non-standard machining are supported.

2. Applications

Copper Nickel Tees are widely used in:

• Seawater cooling systems, fire main systems, ballast water systems, and bilge drainage systems on ships;

• Seawater transport and cooling pipelines on offshore platforms, FPSOs, and offshore drilling units;

• Cooling water systems for desalination plants and coastal power plants;

• Corrosive media transportation pipelines in petrochemical plants;

• Heat exchangers, condensers, coolers, and piping distribution systems;

• Pharmaceutical, food, metallurgical, and other industries requiring high corrosion resistance and cleanliness.

Applicable media: seawater, brine, fresh water, and certain corrosive chemical media.
Applicable environments: high-salinity, humid, flowing seawater, and marine atmospheric conditions.

3. Advantages

• Strong seawater corrosion resistance: suitable for flowing seawater, resistant to pitting, crevice corrosion, and stress corrosion cracking;

• Anti-biofouling: slow release of copper ions inhibits marine organism attachment and reduces pipeline blockage;

• Good weldability: suitable for TIG, MIG, and arc welding;

• Long service life: service life in marine environments can reach 25 years or more;

• Non-magnetic: suitable for magnetically sensitive equipment and systems;

• Certification available: ABS, DNV, CCS, LR, and other classification society certificates;

• Customization supported: produced according to drawings, standards, or samples;

• Stable delivery: regular sizes in stock, batch orders with controllable lead time.

4. Functions

• Divides one fluid flow into two paths, or combines two flows into one in a piping system;

• Provides 90° branch connection and direction change;

• Reducing tee enables pipe diameter transition while dividing or combining flow;

• Acts as a pressure-bearing connection component, ensuring connection strength and sealing reliability;

• Suitable for long-term operation under high pressure, high temperature, corrosive media, and marine environments.

​5.Key Specifications