... Quality certification :TUV,UL Electric Stainless steel heater pipe Features:1. The structure of tubular electric heating ... Safe using and reliablity, is the preferred electrical heating pipe for manufacturer of various electric appliances. 4. Heating pipes ... magnesium oxideTube Material: Stainless steel seamless pipe, welded pipe, copper, yellow brass pipe, carbon steel pipeCommon diameter:Φ22,Φ20,Φ18 ...