When discussing weld neck flange and plate flange, we can see that they have some similarities and differences in structure, application, and performance.
Similarities
1. Flange connection:
Both are flanges used to connect pipes, equipment, and valves, forming a tight pipeline system through bolted connections.
2. Screw hole design:
All have holes for bolt connections, usually connecting flanges to adjacent flanges or pipes through bolts.
3. Applicable materials:
Similar materials can be used for manufacturing, such as carbon steel, stainless steel, alloy steel, etc., to adapt to different working environments.
Differences
1. Neck design:
Welding neck flange: Its neck is usually longer, conical or sloping, and the welding part connecting the pipeline is relatively short.
Plate flange: There is no obvious neck, and the flange is directly welded to the pipeline.
2. Welding method:
Welding neck flange: Usually, butt welding is used, and the surface shape of the flange neck welded to the pipeline is conical, in order to better weld with the pipeline.
Plate flange: The connection between the flange and the pipeline is usually done by flat welding, directly welding the back of the flange and the pipeline.
3. Purpose:
Welding neck flange: suitable for high pressure, high temperature, and high vibration environments, providing better strength and sealing.
Plate flange: generally used for medium and low pressure, medium and low temperature conditions, suitable for situations with relatively low requirements.
4. Installation and maintenance:
Welding neck flange: Installation is relatively complex, but once completed, it usually requires less maintenance.
Plate flange: installation is relatively simple, but maintenance may require more frequent inspection and re tightening of bolts.
5. Cost:
Welding neck flange: usually relatively expensive, suitable for occasions with high requirements for strength and sealing.
Plate flange: usually more economical and suitable for general engineering.
When choosing which type of flange to use, it should be determined based on specific engineering requirements, pressure, temperature, and environmental conditions to ensure the performance and reliability of the flange.
Post time: Feb-27-2024
