Direct square welded pipe unit

The structure of the direct square welded pipe unit is also quite precise. Let’s take a look at it. The flat roll shaft adopts hydraulic nuts, which is convenient for roll removal and replacement, and the preload is tight, with good loosening effect; The whole line adopts combined rolls, which can be adjusted online electrically, and the roll change time is greatly reduced. Direct squaring adopts the most advanced multi-point pre-bending combined forming process in the world at present. The rolls are shared. A set of direct squaring unit rolls can solve the forming problem of all square tubes within a certain range, which can greatly save the roll cost and roll change time. The energy consumption and equipment load are reduced, and the direct square deformation part is the four corners of the square tube; In addition to the four corners of the round-to-square deformation part, the flat edge is also shaped into a circle and then straight, which adds some unnecessary deformation processes and increases energy consumption and equipment load.