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How to solve the warping problem of 3PE anticorrosive steel pipe?

1, from the weld polish to polyethylene chamfering, must have 10-20 mm weld thickness. In order to ensure the extrusion adhesion, the remaining height of the polyethylene layer must be the same as the pipe body.

2. After grinding, the residual height of weld shall be as high as possible, and the residual height shall not be too obvious. Therefore, when polishing the chamfering of the polyethylene layer, the epoxy powder cannot be polished together.

3. Strictly control the length of epoxy powder outside the polyethylene chute and other parts of the pipe body to keep the length above 20mm, which is the cause of epoxy powder corrosion at the weld edge of 3PE anti-corrosion steel tube.


4, left by cross section of epoxy powder coating should protect the whole pipeline, to slow down the edge of the end of the pipe corrosion caused by warping, the grinding wheel grinding steel wire's approach to possible trough, and at the bottom edge set limit device, to control the depth of the tool feed, to avoid damage when grinding epoxy powder coating process, affecting corrosion effect.