What are rust removal and prevention measures for Q345B seamless steel pipe

Q345B seamless steel pipe is relatively solid and durable. However, Q345B seamless steel pipe is easy to rust without special treatment. What are rust removal and prevention measures for Q345B seamless steel pipe?

Before applying Q345B seamless steel pipe anti-corrosion paint, steel wire brush and other tools shall be used to remove oxide skin, rust and other pollutants on the surface of base material. If manual derusting is adopted, the derusting level is Sa2. If power rust removal is adopted, the rust removal level is Sa3. For the oxide scale with strong attachment ability, the rust removal methods mentioned above are not ideal. Spray can be used for rust removal.

The derusting principle of spraying is that the high-speed rotation of spraying blade is driven by high-power motor, so that abrasive such as steel sand, steel shot, iron wire section and minerals can spray the surface of Q345B seamless steel pipe under the centrifugal force, which can not only completely remove pollutants, but also achieve the uniform roughness required by construction. Therefore, it is called the ideal way to remove rust for pipeline anticorrosion. Generally speaking, spraying is mainly used for inner surface treatment of pipes, while sand blasting is mainly used for outer surface treatment of pipes.

Q345B seamless steel pipe should be paid attention to rust and derusting during maintenance, which are the basic operations of maintenance. For Q345B seamless steel pipe, it is necessary to continuously improve the performance, enhance the awareness of rust removal, and make the performance of Q345B seamless steel pipe more stable and better play!