Product Overview
A pipe nipple is a short, straight section of pipe with male threads on both ends. It is used to connect two pipe fittings, valves, or pipes together, enabling pipeline extension, equipment installation, or piping transition. As such, it is a common and indispensable component in fluid systems.
Copper nickel alloy has become a preferred material for marine pipe fittings due to its unique material advantages. Common grades include C70600 / CuNi 90/10, which contains approximately 90% copper and 10% nickel, and C71500 / CuNi 70/30. These alloys combine excellent seawater corrosion resistance, erosion-corrosion resistance, and good mechanical strength, making them important connection components widely used in shipbuilding, offshore engineering, desalination plants, power plant cooling systems, and the petrochemical industry.
What Is a BSP Fitting?
A BSP pipe fitting, also known as a British Standard Pipe thread fitting, refers to a series of technical standards for pipe threads. These standards are widely adopted by piping service industries both domestically and internationally.
According to BSP standards, qualified fittings should connect and seal male threads with female threads. This connection is achieved through various BSP threaded pipe fittings. These standards have been established for a long time and are widely accepted as standard specifications in the piping and fittings industry.
Threaded connections in piping systems use male and female threads to securely join pipes and fittings, forming a tight mechanical seal. They are commonly used in metal piping systems and can be sealed with sealing tape or thread sealant to prevent leakage.
Technical Parameters
| Item | Parameter |
| Product Name | CuNi BSP Threaded Nipple / Copper Nickel BSP Threaded Nipple |
| Material | CuNi 90/10 / UNS C70600, CuNi 70/30 / UNS C71500 |
| Manufacturing Standards | ASTM B466, ASTM B111, ISO 7, ISO 228, BS 21 |
| Size Range | 1/8"–4" / Larger sizes available upon request |
| Length | 30 mm–300 mm, or customized according to drawings |
| Wall Thickness | SCH10, SCH40, SCH80, SCH160, or customized |
| Manufacturing Process | Seamless pipe machining, CNC turning, precision threading |
| Surface Treatment | Pickling, passivation, sandblasting, polishing |
| Inspection Items | Dimensional inspection, thread gauge inspection, PMI material identification, hydrostatic test upon request |
Product Features of Copper Nickel Pipe Nipples
1. Corrosion Resistance for Marine Conditions
Threaded connections in seawater piping systems are often weak points where corrosion and leakage may occur. CuNi BSP threaded nipples are made from copper nickel alloy, allowing them to maintain excellent stability in seawater, brine, humid compartments, and salt-spray environments. This helps reduce connection failures caused by corrosion.
2. High Thread Accuracy and Smooth Connection
The product is manufactured by precision machining. The thread profile is clear, the pitch is accurate, and the engagement is smooth, improving on-site installation efficiency.
Standardized BSP threads offer good interchangeability and can be easily matched with various pipe fittings, valves, and equipment interfaces.
3. Reliable Sealing and Reduced Leakage Risk
By correctly selecting BSPP or BSPT thread types and using suitable sealing materials, a stable and reliable connection seal can be achieved.
For ships, offshore platforms, and other applications with strict leakage control requirements, copper nickel threaded nipples provide a safer and more dependable connection solution.
4. Easy Installation and Maintenance
Threaded connections do not require complex welding procedures. They are quick to install and easy to disassemble, especially suitable for instrument interfaces, maintenance pipelines, equipment connections, branch lines, and piping areas with limited space.
5. Strong Erosion-Corrosion Resistance
In seawater cooling, firefighting water, and ballast water systems, the flow velocity of the medium may vary significantly. Ordinary materials are prone to erosion corrosion at local connection points.
Copper nickel alloy offers excellent erosion-corrosion resistance, effectively extending the service life of the connector.
6. Low Overall Operating Cost
Although the initial purchase cost of copper nickel alloy nipples is higher than that of ordinary materials, their strong corrosion resistance, long service life, and low maintenance frequency can significantly reduce later replacement, downtime, and maintenance costs. They are especially suitable for long-term operating engineering systems.
Applications
1.Marine Piping Systems
Bilge water systems
Condenser systems
Fire mains
Sanitary and cleaning water pipelines
Deck auxiliary pipelines
2.Offshore Rigs and FPSO
Seawater spray deluge systems
Instrument control panel connections
Chemical injection lines
3.Coastal Heavy Industry
Intake water networks of coastal nuclear power plants and thermal power plants
Chemical dosing systems for reverse osmosis seawater desalination equipment
Sampling systems in desalination and industrial plants