What are the connection methods of stainless steel flanges? What are the applicable scenarios for each?

Stainless steel flange is a vital component in pipeline connection, and the choice of its connection method is crucial because it directly affects the safety, reliability and performance of the pipeline system. In different engineering applications, stainless steel flanges usually use a variety of connection methods to meet different needs and working environments. Welding flanges have a long-neck design that can be connected to pipes by welding. They are usually used in piping systems with high pressure, high temperature, or that require frequent disassembly. Welded flanges have excellent sealing and stability and are suitable for occasions with high safety requirements on pipeline systems.

Another common connection method is a blind flange. Blind flanges have no central hole and are mainly used to close the ports of piping systems to prevent fluid or gas from flowing out. It is often used in scenarios such as pipeline blocking, pressure testing, and temporary shutdown of pipeline systems. It is an important tool for pipeline system maintenance and safety testing.

Sliding flange is an easy-to-install connection method with a flat connection surface that can be connected to pipes by welding or bolting. Due to its easy installation, sliding flanges are usually used in low-pressure, low-temperature or non-critical piping systems and are an economical and practical connection method.

Threaded flanges are generally suitable for smaller diameter, low pressure piping systems. It is easy to install, but its sealing performance is slightly poor, so it is mainly used in general industrial piping systems or low-pressure fluid transmission systems.

Butt welding flange is another high-strength connection method. Its connecting surface has grooves and is connected to the pipe through butt welding. It is suitable for pipeline systems with high pressure, high temperature or high sealing requirements, and has good sealing and reliability.