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In sewage treatment, desalination, water plant construction and other systems, the valve is in long-term contact with chlorine-containing and salt-containing medium, which puts forward higher requirements for the corrosion resistance and structural strength of the superstructure such as the valve cover.

In the petrochemical industry, the reliability of valve fittings is directly related to the safety and continuous operation of the pipeline system. As the core pressure-bearing part, the material selection and processing quality of the valve body are very important.