How to remove rust of Q345B low-alloy steel pipe?

Q345B low-alloy steel pipe derusting should first clean the surface of the steel with solvent and emulsion. This method is only used as an auxiliary means of anti-corrosion, and can not really play the role of removing the rust of stainless steel pipe. We can also use steel brushes, wire balls and other tools to remove loose oxide scale and rust before cleaning, but if the protective measures are still not good, it will still be eroded again.

In addition, pickling is one of the methods to remove rust of Q345B low-alloy steel pipe. Generally, chemical and electrolytic methods are used for pickling. Pipeline corrosion protection only uses chemical pickling. Although this method can achieve a certain degree of cleanness, it is easy to cause pollution to the environment, so it is not recommended.