... heating element/electric heater Quality certification :TUV,UL Electrical Stainless steel pipe heater Features: 1.The structure of tubular electric ... etc. Tecnnical data:Insulation materials: magnesium oxideTube Material: Stainless steel seamless pipe, welded pipe, copper, yellow brass pipe, carbon ... steel pipeCommon diameter:Φ22,Φ20,Φ18,Φ16,Φ14,Φ12,Φ10,Φ ...