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.

曼乃斯曼桶形轧辊设计简单，加工方便，但形成非线性的斜轧变形区，导致壁厚不均。

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The announcement came four days before the close of Vodafone's hostile takeover bid for Mannesmann.

BBC: Vodafone seals Mannesmann merger

The European Commission announced on Tuesday it had no objection to Mannesmann's purchase of Orange.

BBC: World's biggest takeover bid

This was one of the main stumbling blocks in Vodafone's long fight for Mannesmann.

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