Which type of joint is commonly used for connecting pipe sections in boiler systems?

The welded joint is commonly used for connecting pipe sections in boiler systems due to its strength and ability to withstand high pressure and temperatures. Welding creates a continuous joint that enhances the integrity of the piping system, ensuring that there are no leaks or weak points where fluid could escape. In high-pressure applications, such as those found in boiler systems, it is crucial to maintain a secure and durable connection to handle the extreme conditions.

Welded joints also provide good resistance to corrosion and fatigue, which is essential in environments where pipes are subjected to high stress, temperature fluctuations, and potential chemical exposure. This makes them particularly suitable for boiler applications, which operate under stringent safety and operational standards.

While other types of joints—like brazed, threaded, or flanged joints—have their specific applications and advantages, they may not offer the same level of reliability and strength as welded joints in high-pressure scenarios. For instance, threaded joints can lead to leaks under high stress, and flanged joints, while easier to assemble and disassemble for maintenance, might not provide the same level of sealing under extreme conditions.