... is to roll carbon steel, stainless steel, special steel, etc. 4-high reversible cold rolling mill is to roll carbon steel ... -3m/s, 4-6m/s); hydraulic(1.5-4m/s, 4-8m/s)Electric(1-3m/s, 4-6m/s); hydraulic(1.5-4m/s, 4-8m/s)Electric(1-3m/s, 4-6m/s ... ); hydraulic(1.5-4m/s, 4-8m/s ...