... made with excellent electrical insulation properties and resistance to high electric strength . Safe using and reliablity, is the preferred ... electrical heating pipe for manufacturer of various electric appliances. 5) Heating pipes are widely used in showers ... : Stainless steel seamless pipe, welded pipe, copper, yellow brass pipe, carbon steel pipe3) Common diameter:Φ22,Φ20,Φ18,Φ16 ...