... manufacturer of various electric appliances.4.Heating pipes are widely used in showers, water dispensers, insulation pool, incubator boiling, ... materials: magnesium oxideTube Material: Stainless steel seamless pipe, welded pipe, copper, yellow brass pipe, carbon steel pipeCommon diameter:Φ22,Φ20,Φ18,Φ16 ... requirements. Quality guarantee, welcome to inquiry. Stainless steel heating pipe used for boiler