As is known to all, corrosion of stainless steel thick-walled pipe involves various sectors of the national economy and every area of people's life.Stainless steel pipe corrosion can be understood as a multiphase reaction system including material and environmental media.

In this sense, preventing corrosion of stainless steel thick wall pipe (also known as corrosion prevention) can be started from three aspects: one is to control the material itself, the other is to control the environment, and the third is to control the interface.The interface also includes: surface corrosion prevention treatment, electrochemical protection, electrochemical protection and coating joint protection, electrochemical protection and corrosion inhibitor joint corrosion prevention.

Surface erosion control is the most widely used in corrosion prevention engineering.Surface corrosion treatment is to point to in a variety of methods places the floorboard of the protective layer on the metal surface, protective layer and its role is that separates stainless steel materials and corrosive environment, in order to block the emergence and development of stainless steel corrosion, achieve the purpose of reduce or prevent corrosion of stainless steel tube.In order to make the protective layer on the surface of thick wall stainless steel pipe have good adhesion and appearance, the surface of stainless steel pipe must be treated before the coating of large diameter thick wall stainless steel pipe.Stainless steel surface pretreatment is also called surface adjustment and purification, usually refers to stainless steel pipe metals and some non-metallic materials in coating, electroplating or electroless plating, rust sealed, membrane surface modification, surface conversion before construction such as surface treatment.