The advantage of this approach is: forming a stable, tube billet 'rising edge height, reduce edge, forming the edge is not easy to produce bulge, reduce the forming roll cutting depth at the same time, reduce the diameter of the forming roller accordingly;Forming roll process can be divided into slices, roll change is convenient, and intermediate straight part could be used for different specifications of the tube billet forming a total.Defect is roll pass without sharing, increased the number of roll.Due to deformation of the first roller nip is difficult, so, this kind of deformation difficult for intermittent short strip steel welded pipe units of production.

Hebei Abter is a leading supplier and exporter of  steel pipes in China. Abter is an exporting company who is jointly invested by 6 top steel factories ,with  the purpose to providing multiple products and professional services to the clients.we establish a long -term business relationship with many Group company.Our company is a large scale enterprise which manufacture and supply LSAW, fluid pipe, SSAW,ERW, DIN Tube, , alloy pipe, tubing, casing, line pipe, etc. With advanced technological equipment, tremendous technical strength and reliable product quality, our  steel pipes have been exported to the Middle East, Southeast Asia, Africa, South America, North America, Europe, Australia and many other countries and regions