Made on the surface of wrought iron products can reduce and avoid metal surface rust, but also play a decorative role in the process of implementation is called the protection and decoration of the surface of wrought iron products. For wrought iron products, the method of surface protection and decorative comprehensive treatment is generally used. There are many specific treatment methods, but in terms of wrought iron products, the commonly used is painting and electroplating (hot plating), if the two are used together, it is the best for durability.

1, non-metallic protective layer: on the surface of iron products coating one or several layers of organic and inorganic compounds, such as paint, plastic, rubber, asphalt, enamel, acid-resistant materials, anti-rust oil, etc.

2, metal protective layer: on the surface of iron products plated with a layer of metal or alloy that is not easy to rust, such as zinc, tin, nickel, chromium, copper, titanium, etc. Common methods are: electroplating, spray plating, hot dip plating, etc., but the metal protective layer used for iron products should generally be selected as hot dip galvanizing. Due to the professional oil removal and rust removal before the plating of the workpiece and the high temperature dip plating in the zinc melt of 440 degrees Celsius, the coating can cover many defects and gaps, avoid later rust (especially suitable for outdoor iron products), and has excellent adhesion.

3, chemical protective layer: The use of chemical and electrochemical methods to form a layer of non-metallic film on the surface of iron products, such as surface black, blue, phosphate treatment.

The protective layer obtained by the above methods plays both a protective role and a certain decorative role. However, for wrought iron products, the majority of users are increasingly demanding that the surface of wrought iron products not only be rust resistant, but also have a variety of different textures, three-dimensional or imitation of old, antique and other artistic effects, or gorgeous appearance. Therefore, on the basis of the above, from the thousands of paint varieties currently sold on the market to choose the strongest affinity with the base surface, the most resistant to aging paint brands and reasonable application methods, it is more and more important. Only targeted choices will achieve the desired decorative effect and reduce the maintenance workload after several years.