... 2hi,4hi cold and hot roll mill 2)100,000-500,000t wire,bar,rod material; 3)continious,semicontinous roll production line; 1, ... 20 round bar , deformed bar 2.3 Process: Qualified billet ------- Heating --------- Rough 300 × 1 three-roll mill ------- 80 tons of hot scissors ... equipment, technical parameters and weight, 3.1 300 × 1 rough three-roll mill 1 group 36 tons Roll parameters: max 320 min 280mm ...