Cases of Large Diameter SSAW Steel Pipe Bent

Large diameter ssaw steel pipe processing to a certain length, then bent certainly exist in the steel case and the phenomenon is often encountered. Large diameter spiral pipe due to uneven along the longitudinal direction or in the bottom of the pipe will be the occurrence of such a curved shape, commonly known as "goose head bent." Bending of the main reasons, artificial heat check, local cooling caused; straightening when adjusted properly, serious straightening roll wear generated; bending caused by lifting transport; sizing machining, assembly and improper adjustment may be possible.

For the occurrence of bending large diameter spiral pipe, if the curvature is excessive, it can be secondary re-straightening, but if it is unable to straightening "goose head bent" should be given to the removal process. In addition, the large diameter spiral pipe production process, due to several rolls can not be very accurate in a straight line, so it is easy to bend, the solution is to increase the number and distance of these rolls.