ASTM A53 Gr.A seamless steel pipe, cold drawn seamless steel pipe is a kind of steel pipe metal product with hollow structure. Due to the structural characteristics of ASTM A53 Gr.A seamless steel pipe, it has a wide range of applications in many fields. It has an extremely important position in the development of machinery processing industry and production.
The pickling process of ASTM A53 Gr.A seamless steel pipe is a method of cleaning the metal surface by using an acid solution to remove oil, oxide scale, rust and welding spots on the surface of the seamless pipe. Passivation is sometimes called "pickling".
If the corrosion product generated due to the action of the medium has a dense structure and forms a layer of film (often invisible), it closely covers the surface of ASTM A53 Gr.A seamless steel pipe, which changes the surface state of the metal and makes The electrode potential of the metal greatly jumps in the positive direction, and becomes a passive state for corrosion resistance.