B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21B—ROLLING OF METAL
B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
B21B39/34—Arrangements or constructional combinations specifically designed to perform functions covered by more than one of groups B21B39/02, B21B39/14, B21B39/20
Rame ferroviaire avec système de guidage pour guider un équipement de travail, et combinaison d'une telle rame ferroviaire et d'un équipement de travail