... made of titanium, zirconium, SUS304 and SUS316 stainless steel tubes. Single tube metal heater (1). Made of titanium, zirconium, SUS304 and ... . The voltages have 120V, 240v, 380v, 415v and 480v, single-phase and three-phase (according to clients requirements), Power range from 0.5kw ... complying with international inspection standards and ensure the electrical safety. Single tube metal heater