Stainless steel pipe is a hollow steel pipe that is not easy to rust. Stainless steel pipe is a kind of hollow long cylindrical steel. Its scope of application is used as a pipeline for conveying fluids. It is mainly widely used in industrial transmission pipelines such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instrumentation, etc., as well as mechanical structural components.

According to the manufacturing method, it is divided into two types: hot rolling and cold rolling,the thickness range is 0.3-80 mm. Cold rolling is a steel coil obtained by further thinning the No. 1 steel sheet to a target thickness under room temperature conditions. Compared with hot-rolled steel, cold-rolled steel has a more precise thickness, smooth and beautiful surface, and also has various superior mechanical properties, especially in terms of processability. Because cold-rolled raw coils are relatively brittle and hard, and are not suitable for processing, cold-rolled steel sheets are usually required to be annealed, pickled and surface smoothed before being delivered to customers.