Steel structure corrosion will cause indirect losses such as the decline of product quality and the increase of resource and energy consumption. According to the relevant data, the annual loss of metal structure equipment and materials caused by steel corrosion in China is about 20% – 40% of the annual output. The corrosion of metal objects in the world exceeds 100 million tons every year, which greatly reduces the gross national economic output value, to the extent that enterprises use steel structures.The same is true of the structure, which will increase the annual manufacturing cost of the enterprise.As we all know, the steel structure is made of steel plates or profiles, and the common connection method is welding. If the corrosion work at the welding joint is not well handled, the service life of the steel structure will be reduced. The anticorrosive coating is a material with compact structure, water resistance, oxygen resistance and corrosion resistance medium, and can produce a firm attachment on the surface of the steel structure.In order to prevent the occurrence of corrosion in a long time, what are the specific functions of anti-corrosion coating for steel structure. 

Corrosion pictures of steel structure

     1、 The coating for steel structure has a solid and compact continuous film, which can isolate the components of steel structure from the surrounding harmful media and play a protective role.

     2、 Alkaline pigments (such as red lead paint) have the function of neutralization, which makes it difficult for iron ions to enter the solution and prevent the cathodic reaction of steel. 

Three dimensional steel structure anticorrosion measures

     3、 The coating containing a large amount of zinc powder (such as zinc rich primer) is painted on the surface of steel structure. When the electrochemical reaction occurs, the active zinc becomes the anode and the iron becomes the cathode, thus protecting the iron.

     4、 It has good corrosion resistance and can prevent iron ions from moving.

     5、 Due to the special use of coatings, through the addition of special components, can have acid, alkali, oil resistance, fire resistance, water resistance and other functions.