As a result, the method can be widely used as a method for manufacturing the seamless tube by a Mannesmann mandrel mill system.
由此，可广泛地适用作由曼内斯曼芯棒式无缝管轧机方式的无缝管的制造方法。
2
Another method is to cold-rolling method, it is to Mannesmann brothers invented Meng Hot rolling Mill of the methods used in cold working.
另一种方法是冷轧法，它是将孟内斯曼兄弟发明的热轧机应用于冷加工中的方法。
3
The Mannesmann barrel-shaped rolls can be designed arid processed easily, but it makes the non-linear deformation zone in skew-rolling and leads to the inhomogeneous wall thickness.