Method for derusting Q345B seamless steel pipe

The material of Q345B seamless steel pipe is relatively strong and durable. For the rust removal of Q345B seamless steel pipe, it is necessary to master certain methods. Only by continuously improving the awareness of rust removal can the performance of Q345B seamless steel pipe be better. The following briefly introduces the methods of rust prevention and rust removal for your reference:

Before painting Q345B seamless steel pipe anti-corrosion paint, it is necessary to use tools such as wire brushes to remove scale, rust and other pollutants on the surface of Q345B seamless steel pipe. If manual rust removal is used, the rust removal level is Sa2, and power rust removal is used. In other words, the derusting level is Sa3 level. For the oxide scale with strong adhesion ability, the two derusting methods mentioned above are not ideal. The following spray (throwing) derusting method can be used.

The derusting principle of spraying (throwing) rust removal is to drive the spraying (throwing) blades to rotate at high speed through a high-power motor, so that steel sand, steel shots, iron wire segments, minerals and other abrasives are subjected to centrifugal force on the surface of Q345B seamless steel pipe. Spraying (throwing) treatment can not only completely remove pollutants, but also achieve the uniform roughness required for construction. Therefore, it is known as an ideal rust removal method for Q345B seamless steel pipe corrosion. Generally speaking, sandblasting derusting is mainly used for pipe inner surface treatment, and shot blasting derusting is mainly used for pipe outer surface treatment.

Q345B seamless steel pipe should pay attention to rust and rust removal during maintenance. These are the basic operations of maintenance. The performance is more stable, and the role can be fully exerted.