... is the preferred electrical heating pipe for manufacturer of various electric appliances.4.Heating pipes are widely used in showers, water dispensers, ... materials: magnesium oxideTube Material: Stainless steel seamless pipe, welded pipe, copper, yellow brass pipe, carbon steel pipeCommon diameter:Φ22,Φ20,Φ18,Φ ... . Quality guarantee, welcome to inquiry. Stainless steel heating pipe used for boiler