Corrosion of Stainless Steel ANSI Valve Body is generally understood to be the damage of valve metal materials under the action of chemical or electrochemical environment.
Since the "corrosion" phenomenon occurs in the spontaneous interaction between the metal and the surrounding environment, how to isolate the metal from the surrounding environment or use more non-metallic synthetic materials is the focus of corrosion prevention.
The valve body (including the valve cover) of the valve occupies most of the weight of the valve and is in constant contact with the medium, so the valve is often used from the valve body material.
The corrosion of the API Ball Valve Body is not only two forms, namely chemical corrosion and electrochemical corrosion. Its corrosion rate is determined by the temperature, pressure, chemical properties of the medium and the corrosion resistance of the valve body material.
Corrosion speed can be divided into six:
1, complete corrosion resistance: corrosion rate is less than 0.001 mm / year;
2, extreme corrosion resistance: corrosion rate 0.001 to 0.01 mm / year;
3, corrosion resistance: corrosion rate of 0.01 to 0.1 mm / year;
4, still resistant to corrosion: corrosion rate of 0.1 to 1.0 mm / year;
5, poor corrosion resistance: corrosion rate of 1.0 to 10 mm / year;
6, non-corrosion resistance: corrosion rate is greater than 10 mm / year.
