Application of flanges in the shipbuilding industry and common flange models

As an important component of pipeline connection, flange plays a vital role in the shipbuilding industry. The complex pipeline system of the ship requires a reliable connection method, and flange is the key component to meet this demand. This article will explore the application of flanges in the shipbuilding industry and introduce several common flange models.

Application of flange in shipbuilding industry

The ship's piping system involves the transportation of multiple media such as fuel, lubricating oil, cooling water, compressed air, etc. Flanges connect pipes, valves and equipment in these systems to ensure the sealing and stability of the system. Due to the complex operating environment of ships, flanges need to be resistant to corrosion, high pressure and vibration. Therefore, the shipbuilding industry has strict requirements on the material and manufacturing process of flanges, and usually uses materials such as stainless steel, carbon steel or alloy steel.

Common flange models

In the shipbuilding industry, commonly used flange models include the following:

1. Flat welding flange

Flat welding flange is one of the most common flange types, suitable for low-pressure and medium-pressure piping systems. It has a simple structure and is easy to install, and is widely used in cooling water and compressed air pipelines on ships.

2. Butt welding flange

Butt welding flanges are suitable for high pressure and high temperature environments and are often used in fuel and lubricating oil pipelines on ships. They have high strength, good sealing performance, and can withstand large pressure and temperature changes.

3. Threaded flange

Threaded flanges connect pipes through threads and are suitable for small-diameter pipe systems. They are easy to install and disassemble and are often used in ship instrumentation and control systems.

4. Loose flange

Loose flange is suitable for piping systems that need to be frequently disassembled, such as repair and maintenance pipelines of ships. Its structure is flexible and easy to maintain, but its sealing performance is relatively low.

Flange selection and maintenance

In the shipbuilding industry, it is crucial to choose the right flange model and material. It should be considered comprehensively based on the pressure, temperature and medium characteristics of the pipeline system. In addition, regular inspection and maintenance of the flange connection status can effectively prevent leakage and failure and ensure the safe operation of the ship.

In short, flanges play an irreplaceable role in the shipbuilding industry. Understanding their application scenarios and common models will help optimize the design and maintenance of piping systems and improve the operating efficiency and safety of ships.