... heater Quality certification :TUV,UL Stainless steel heating pipeFeatures: 1.The structure of tubular electric heating element is in a ... preferred electrical heating pipe for manufacturer of various electric appliances.4.Heating pipes are widely used in showers, water dispensers, insulation ... , welded pipe, copper, yellow brass pipe, carbon steel pipeCommon diameter:Φ22,Φ20,Φ18,Φ16,Φ14,Φ12,Φ10,Φ8.5,Φ ...