Abstract: Briefed in the article are all the main aspects of the Ф273 mm MPM plant,including the capacity,product mix,process types,manufacturing process flow and the processes and equipment features/technical data of the main operation units,i.e.,the cone type piercing mill,the 5-stand MPM and the 12-stand slight stretch sizing(reducing) mill. Also detailed are the-state-of-art process control techniques as employed for the plant,i.e.,the material tracking system,the on-line quality assurance system,the computer-aided rolling technology application system for the cone type piercer mill,the MPM roll gap auto-control system,the MPM process supervision system,and the computer-aided rolling technology application system for the slight stretch sizing(reducing) mill. The information as provided by the author is worth using as reference for construction of similar domestic mills.