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Spiral Steel Pipe

Bending of spiral weld pipes of spiral steel pipes: plates can be bent for 180°, but to reduce cracks on the curved surface, the radius is two times of the thickness, the thickness radius of thick plates is determined twice in the rolling direction, and the bending direction shall be vertical to the rolling direction. The radius that is 4 times of the plate thickness shall be guaranteed, especially in the case of welding. To prevent processing cracks, the surface of the welding area shall be ground. The welding repair method of spiral weld pipes with crack is one of the methods for heat resistance of stainless steel. With extraordinary inoxidizability and corrosion resistance performance, it is usually applied to pipes of alkali made through electrolysis with ion-exchange film. However, the material has high requirements for the technology, so serious potential hazards will be caused once the alloying element and the filling material of the base is incomplete, the weld process is unsuitable, the working condition is not good, medium in the pipe is corroded, there are working stress and pipe crack, etc. Therefore, crack recovery is also one good repair method.

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Spiral steel pipe

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Bending of spiral weld pipes of spiral steel pipes: plates can be bent for 180°, but to reduce cracks on the curved surface, the radius is two times of the thickness, the thickness radius of thick plates is determined twice in the rolling direction, and the bending direction shall be vertical to the rolling direction. The radius that is 4 times of the plate thickness shall be guaranteed, especially in the case of welding. To prevent processing cracks, the surface of the welding area shall be ground.
The welding repair method of spiral weld pipes with crack is one of the methods for heat resistance of stainless steel. With extraordinary inoxidizability and corrosion resistance performance, it is usually applied to pipes of alkali made through electrolysis with ion-exchange film. However, the material has high requirements for the technology, so serious potential hazards will be caused once the alloying element and the filling material of the base is incomplete, the weld process is unsuitable, the working condition is not good, medium in the pipe is corroded, there are working stress and pipe crack, etc. Therefore, crack recovery is also one good repair method.

Spiral Steel Pipe