First of all, we must understand what is pickling: the method of using acid solution to remove oxide scale and rust on the surface of steel is called pickling. Acids for pickling include sulfuric acid, hydrochloric acid, phosphoric acid and mixed acids. 　　

The pickling process is to remove the surface oxide scale, and then go through lubrication treatment (carbon steel-phosphorous saponification, stainless steel-butter lime, copper and aluminum pipe-oiling), using the old technology-copper plating), and then drawing and deep processing. If the seamless steel pipe is not pickled, there may be oxides and oil stains on the surface, and the nuclear energy of the phosphating solution cannot remove them, and the quality of phosphating will be reduced. Moreover, in the manufacturing process of seamless steel pipe, after many processes, if you are not careful, it will leave scars on the surface of seamless steel pipe, which will reduce the corrosion resistance of parts and directly affect the service life. 　　

In order to improve the corrosion resistance of seamless steel pipe and prolong the service life of the products, the seamless steel pipe must be pickled and passivated to form a protective film on the surface.

Changsha Xiangjia Metal Materical Co., Ltd. the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe in various grades and sizes. Years of production experience and manufacturing facilities who have a capacity of 200,000 tons per annual will ensure the good quality and competitive duration of our products.