... with 5 teeth wheel, four teeth wheel, connecting rod, sliding rod and arc plate, the drive can use pneumatic ... produce the pierced billet Φ 70-280,the core rod consists of MPM short circle cooling , full ... mill can produce Φ 70-139, the core rod consist of MPM online cooling and MPM short circle ... reducing mill is continous multi stands non core rod longitudinal roll, it consists of 2-roller reducing ...