Rolling mills with varied size angularly displaceable roll

A tube rolling mill comprising a plurality of successive roll stands which are arranged one after the other in the rolling direction and which are interchangeably disposed in stand beds, a plurality of radially non-adjustable rolls in each stand, drive means for said rolls, flexible couplings and drive shafts connecting said rolls and drive means, at least a part of said roll stands being angularly displaceably mounted about the longitudinal axis of the work material with respect to the stand beds, whereby rolls can be used in the rolling stands whose ideal diameters are larger or smaller than the rated ideal diameter for that stand location, the stand drive shafts being inclined upwardly or downwardly relative to the respective output spindles owing to the larger or smaller radial distance of the stand drive shafts from the longitudinal axis of the work material, as the case may be, the flexible couplings compensating for the angular misalignment of the drive shafts relative to the output spindles of the transmission.