... appliances. 5)Heating pipes are widely used in showers, water dispensers, boiling, washing machine and various types of ... heating appliances, etc. techanical data: Insulation materials: magnesium oxide tube Material: Stainless steel seamless pipe, welded pipe, copper, ... plated nickel, passivation, black, spray. Note:Electric heating tube in accordance with user-designed product drawing and technical ...