... electric appliances.5)Heating pipes are widely used in showers, water dispensers, boiling, washing machine and various types of heating ... materials: magnesium oxideTube Material: Stainless steel seamless pipe, welded pipe, copper, yellow brass pipe, carbon steel pipe Common diameter:Φ22,Φ20,Φ18,Φ16,Φ14 ... meet the needs of usersQuality certification : UL TUV Customer required water spiral heating pipe