Construction machinery includes lifting machinery, earth moving machinery, transportation machinery, concrete machinery, railway maintenance machinery and many other types. It is necessary to prepare wear-resistant coatings on key parts to improve service life. When serving in coastal or humid environments, it is also necessary to consider the corrosion resistance of equipment.

In the long-term harsh working environment, it is easy to cause damage to various components of the equipment, such as peeling, peeling, cracking, impact, corrosion, wear, etc. Therefore, construction machinery and equipment and their components need regular maintenance or repair, with large maintenance workload and high maintenance cost.