According to the performance characteristics and application purposes of the steel plates, they are classified into stainless steel plates resistant to corrosion, stainless steel plates resistant to sulfuric acid, stainless steel plates resistant to pitting corrosion, stainless steel plates resistant to stress corrosion, high-strength stainless steel plates, etc. According to the functional characteristics of the steel plates, they are classified into low-temperature stainless steel plates, non-magnetic stainless steel plates, easy-to-machine stainless steel plates, superplastic stainless steel plates, etc. The commonly used classification method nowadays is to classify them based on the microstructure characteristics of the steel plates and the chemical composition characteristics of the steel plates, as well as the combination of the two. Generally, they are divided into martensitic stainless steel plates, ferritic stainless steel plates, austenitic stainless steel plates, duplex stainless steel plates, and precipitation hardening type stainless steel plates, or they are divided into two major categories: chromium stainless steel plates and nickel stainless steel plates. The typical applications are: heat exchangers for pulp and paper machinery, mechanical equipment, dyeing equipment, film processing equipment, pipes, external building materials for coastal areas, etc. 

What is a stainless steel check valve? 

The stainless steel check valve is a type of valve that automatically opens and closes the valve disc based on the flow of the medium itself, and is used to prevent the reverse flow of the medium. It is also known as a reverse flow valve, a one-way valve, a backflow valve, and a back pressure valve. The check valve is a kind of automatic valve, and its main function is to prevent the reverse flow of the medium, prevent the reverse rotation of pumps and drive electric motors, and discharge the medium in the container. The check valve can also be used in the pipelines that supply supplementary supply to auxiliary systems where the pressure of the medium may rise above the system pressure. The check valve can be mainly divided into swing check valves and lift check valves. The function of this type of valve is to allow the medium to flow in only one direction and to prevent the reverse flow. Usually, this type of valve operates automatically. When the fluid flows in one direction under the pressure of the fluid, the valve disc opens; when the fluid flows in the opposite direction, the fluid pressure and the self-weight of the valve disc act on the valve seat, thereby cutting off the flow.