The temperature of the hot rolled seamless steel tube products is very high, after the completion of the rolling surface covered with tin oxide. For some surface requirements higher products, through a way to remove the oxide on the surface of the iron, improve the quality of surface. At this time will be pickling.
Pickling is clean a method on the surface of the seamless steel pipe, iron oxide, and some corrosion on the surface of the dirt, etc., can be removed by pickling.