The purpose of metal protection is to control the consumption of metal materials forming metal products due to corrosion, prevent the damage of metal products, and extend their service life. Therefore, in addition to preventing metal corrosion, it also contains the meaning of protecting metal, so it is called metal protection. The comprehensive methods and means adopted to achieve the purpose of protection are called protection technology.
In addition to correct selection of metal materials and reasonable design, metal protection methods can mainly adopt surface protection layer, electrochemical protection and treatment of corrosive media.
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