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Factors causing the straight seam steel pipe not straight
Date:2020-06-23      Views:330Time      Label:Factors causing the straight seam steel pipe not straight

1. Straight seam steel pipe bends in the same direction of the weld

Reason: The normalization of the welding seam is not sufficient, and there is thermal stress on the side of the pipe near the welding seam, so it bends in one direction after cooling.

 

2. Straight seam steel tube irregular bending

Cause: The pressure between the three rollers is inconsistent; Straightening rollers wear more.

 

3. The length of the straight seam steel pipe is shortened greatly

Reason: The roll angle between the three straightening rolls is too different; Straightening pressure is greater.

 

4. One end of the straight seam steel pipe is bent

Cause: The distance between the rollers is too large.

 

5. Straight seam steel pipe head is not round

Cause: The contact phase distribution between the three straightening rollers is improper or coincident, and the roller pressure is too high.

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