Spiral pile is usually produced by cutting deformation welding, pickling, hot plating and other processes. Pickling hot dip galvanizing is an important anticorrosive treatment process, which directly affects the service life of spiral piles.
The processing level of spiral pile directly determines the service life of metal pile, such as the quality of welded pipe, the quality level of welding, the existence of bubbles, the length and width of weld seam. This will affect the future service life of the pile and the quality of subsequent processing. Pickling is an important anticorrosive basic process, the quality of hot plating, such as hot plating time and surface treatment quality, will affect the quality of anticorrosive treatment pile. Generally, screw piles can be used for 40 to 80 years. The environment and use method of the process also affect the service life of the pile, such as the acidity and alkalinity of the soil, whether the operation process is appropriate, and improper use, which will lead to damage to the surface of the metal pile, damage to the metal protective layer, accelerate the corrosion of the metal pile, and shorten the service life.
