The yield strength of duplex steel flanges is much higher than that of stainless steel flanges. Based on our long-term use, we have concluded that if a conventional stainless steel flange can be used for one year, then duplex steel flanges can be used for at least one year. In addition, it is well used in seawater desalination, sewage treatment, acidic and alkaline environments, has a long service life, and also saves replacement time.
The flange is made of low-grade materials, while the pipeline is made of the same material as the pipeline, which can save materials. When the pipe material is special and expensive, the cost of welding flanges of the same material is higher. But this connection is only a part of the device, such as the connection between stainless steel flanges and water pumps, so it is not good to call the water pump a "stainless steel flange part". Smaller valves can be referred to as "stainless steel flange parts". A flange gasket is a circular ring made of materials with plastic deformation and certain strength.
