Abstract: An apparatus for processing especially heavy metal tubes comprises a frame supported by wheels, the frame having a plurality of supports consisting of rollers which may together support the tube to be processed. With a support which is quickly movable along the frame a bearer is associated which carries a processing tool, e.g. a grinding cross cut machine, as well as driving means for mechanically putting the tube into rotation during a processing operation. The driving means may also be used for giving the tube a longitudinal movement during simultaneous rotation thereof.