... Material: a) kettle and cover:SUS 304 or SUS 316; b) jacket: SS304 or carton steel.Electric heating, oil heating, steam heating ... or firing heating. optional.Equip: kettle, cover, mixing equipment, jacket, bearing, gearing and seal etc.Attemperator optional.Outer casing surface ... SUS316L or SUS304.4.Heating and cooling by jacket or steam5.heated by jacket/steam and cooling by inner pipe coil. ...