... consisted of cold shear body, main drive, downswing transmission system, blade replacement system, up pressure roller device, lower supporting roller. ItemUnitEquipment's ... 1, hot rolling mill2, cold rolling mill3,2-roller horizontal rolling mill4,2-roller vertical rolling mill5,3-roller pipe rolling mill /tube rolling mill6, 650 3-roller rolling mill7, 4-roller planetary rolling millthe main ...