It is designed according to electrical stove or microwave oven request.Heating pipe adopts high temperature resistance MgO powder as the insulation medium and the stainless steel case is passed oxidation deal through the advanced web band protection oven 1050°C in order to become the a special oxidation layer and improve the high temperature oxidation and bittern corrosive performance of the heating pipe.The heating tube has high power density and strong heat radion.This product with good safe performance can work normally after 3000hrs life test.