The most common problem with long-term use of steel pipes is rust. Let's teach you how to maintain straight seam welded pipes. At present, it is commonly used to remove rust by treating steel pipes with abrasives.
1. Spraying (throwing) abrasives for straight seam welded pipes:
In order to achieve the ideal rust removal effect, the abrasive should be selected according to the hardness of the surface of the straight seam welded pipe equipment, the original rust level, the required surface roughness, the coating type, etc. For single-layer epoxy, two-layer or three-layer polyethylene coating It is easier to achieve the ideal rust removal effect by using a mixed abrasive of steel sand and steel shot.
2. Rust removal speed of straight seam welded pipes:

3. Particle size and ratio of abrasives for straight seam welded pipes:
In order to obtain better uniform cleanliness and roughness distribution, the particle size and proportion design of the abrasive are very important. Too much roughness will easily cause the anti-corrosion layer to become thinner at the peaks of the anchor lines; at the same time, because the anchor lines are too deep, bubbles will easily form in the anti-corrosion layer during the anti-corrosion process, seriously affecting the performance of the anti-corrosion layer.