How to maintain Q345B seamless steel tube

In most people's subconscious mind, Q345B seamless steel tube is not easy to rust. To tell the truth, the corrosion resistance of Q345B seamless steel tube is very good, so its cost performance ratio is relatively high, because its surface has a layer of transition film, which can reduce the possibility of oxidation.

However, due to the excessive indulgence for Q345B seamless steel tube, the maintenance of Q345B seamless steel tube did not get much care. However, Q345B seamless steel tube shows that the part with weak corrosion resistance in the transition film will form point corrosion reaction due to self-excited reaction, and produce small holes, which will form a strong corrosive solution with close chloride ions, thus accelerating the corrosion rate. In addition, the intergranular corrosion cracking inside the Q345B seamless steel tube will destroy the transition film on the surface of Q345B seamless steel tube. Therefore, the surface of Q345B seamless steel tube should be cleaned and maintained at a certain level to better extend the service life of Q345B seamless steel tube.