Big diameter SSAW steel pipe is a spiral steel pipe with a diameter better than 1 meter. It is formed by bending steel strip and then welding. Steel pipes are subjected to water stress, bending, flattening and other experiments. Generally the delivery length is twelve meters, or personalized length.




In the production of massive-diameter SSAW steel pipes, there are many influencing variables result in to misalignment. Steel pipes are degraded due to misalignment extreme tolerance. What is trigger to misalignment how to avert it?



Motives of misalignment for huge-diameter SSAW steel pipes:

one. The sickle bend of the steel belt is the principal issue triggering the misalignment of the steel pipe. In the forming of SSAW steel pipes, the sickle bend of the steel strip transformed the forming angle constantly, resulting in the modify of the weld gap, resulting in seams, staggered edges or even overlapping edges, which serious impacted the good quality of steel pipe. As a result, shell out consideration to the sickle bend soon after uncoiling the steel strip, controlling the vertical roll, the disc shear can minimize off element of the sickle bend and the steady management and correction of the forming angle are to decrease the sickle bend of the steel strip throughout the production procedure.



two. Due to the poor shape and dimensional accuracy of the untrimmed steel strip head and tail, it is simple to result in the steel strip to bend hard and cause misalignment during butt joints.



3. When the reinforcement of the welding seam of the head and tail of the steel strip is large, if the more than-forming is not handled properly, it is straightforward to trigger a massive incorrect edge.



4. The poor problem of the edge of the steel strip is yet another essential reason for misalignment.



Changsha Xiangjia Metal Materical Co., Ltd. is the foremost manufacture in China, has been insisting on product high quality as the center and inheriting quality for 18 years. If you want any steel pipes, we are your great option.

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