• Improper welding of X80 pipeline may cause cracks
• Brief introduction of API X52 pipeline steel
• The difference between PSL1 and PSL2
• Harm of inclusions in X70 pipeline steel
• API 5L pipeline pipe
• X52 steel plate surface quality standards that need to be met
• The basic production process of API 5L X60 pipeline steel
• The key to Q460D steel welding process
• What does the heat treatment of Q690 Steel include?
• Reasons for choosing Q690D steel

What to do if S690QL steel plate rusts

Pickling: The process of using acid solution to remove scale and rust on the surface for S690QL steel plate is called pickling. It is a method of cleaning the metal surface ,which is usually carried out together with pre-passivating treatment.

Shot blasting: Shot blasting is a cold treatment process, which is divided into shot blasting cleaning and shot blasting strengthening. As the name implies, shot blasting cleaning is to remove impurities such as surface oxide skin to improve the appearance quality of S690QL steel plate.

Shot blasting strengthening is to use high-speed moving projectile flow to continuously impact and strengthen the surface of the workpiece for S690QL steel plate, forces the surface and surface layer of S690QL steel plate to undergo changes such as microstructure modification during the cyclic deformation process, this can improve the fatigue fracture resistance of the material/part for S690QL steel plate, prevent fatigue failure, plastic deformation and brittle fracture, and increase the fatigue life.

Polishing: A processing method that reduces the surface roughness of the workpiece by mechanical, chemical or electrochemical action to obtain a bright and smooth surface of S690QL steel plate. Polishing does not improve the dimensional accuracy or geometric shape accuracy of the workpiece, but for the purpose of obtaining a smooth surface or mirror gloss, and sometimes to eliminate gloss (matting).