... electric heater Quality certification :TUV,UL Stainless steel heating pipe Features: 1.The structure of tubular electric heating ... simple structure, long life, high thermal efficiency, good mechanical strength, and can be bent in a variety of ... materials: magnesium oxideTube Material: Stainless steel seamless pipe, welded pipe, copper, yellow brass pipe, carbon steel pipeCommon diameter:Φ22,Φ20,Φ18 ...