Unwanted.
Stainless steel flanges do not necessarily require duplex steel. In general, unidirectional steel is sufficient for stainless steel flanges to meet usage requirements, and bidirectional steel is only used in situations where high load-bearing capacity is required.
Definition and classification of stainless steel flanges
Stainless steel flange is made of stainless steel and is used to connect components of two pipelines. According to different connection methods, stainless steel flanges can be divided into welding flanges, threaded flanges, socket flanges, and other types, each of which is further divided into different pressure levels and diameters.
The use of stainless steel flanges
Stainless steel flanges are commonly used in applications that require high temperature resistance and corrosion resistance, such as chemical, petroleum, metallurgical, power and other industries. Its advantages include good sealing, sturdy structure, easy installation, long service life, high reliability, etc.
Characteristics and application scenarios of duplex steel
Dual phase steel refers to stainless steel in which the ferrite phase and austenite phase each account for about 50% of its solid solution structure. Dual phase steel has high strength, excellent corrosion resistance, and welding performance, making it particularly suitable for use in high chloride environments.
However, the cost of duplex steel is relatively high and is usually only used for special needs.