LSAW Steel Pipe

　　In the production process of thick-walled straight seam steel pipes , it is necessary to perform strict production processes. If the production process is unreasonable or the production equipment is not used properly, deviations will occur. This situation is called misalignment, which clearly leads it is necessary to prevent the cause of the misalignment of thick-walled straight seam steel pipes. 　　What are the causes of the wrong side of thick-walled straight seam steel pipes? 　　1. The thick side straight seam steel pipe has the wrong side, then you should first check whether the sickle of the steel belt is bent, the sickle bending is the main factor causing the wrong side of the steel pipe; 　　2. When the remaining height of the steel strip head-to-tail butt welding seam is relatively large, if the correct processing is not performed during forming, it will easily cause a large misalignment; 　　3. If the shape and dimensional accuracy of the uncut edges of the steel strip are...

　　Pipe forming the strip is unequal curvature composite longitudinal deformation process and continuous operation in cross section, and the strip is bent by the force of a multi-directional deformation process. 　　The basic principle of straight seam steel pipe forming theory is by the action of an external force to produce plastic deformation of the steel strip into a desired shape and size tubes. Since the steel pipe in the process of deformation of the main surface in a continuous horizontal and vertical aspects, the binding applied thereon is arranged in two aspects to implement and pass through the mill roll forming, roll passes is to make transverse deformation of steel, the steel sheet rolling mill is arranged to produce longitudinal deformation, the specific operation models and a variety of differences in engineering is a continuous steel deformation process to be implemented in stages, from the corresponding mill (including the roll groove and mill arrangement) to achieve. ...