High temperature electric heating radiant tube features:1, selection of high temperature electric heating radiant tube seamless cold drawn heat-resistant steel tube to produce high quality raw materials (the highest temperature is 1200 degrees) manufacturing2, high temperature electric heating radiant tube using resistance wire inner core U axial end welding way3, high temperature electric heating radiant tube using resistance wire and ceramic basically no shielding, resistance wire and furnace temperature difference is small4, the highest working temperature of high temperature electric heating radiant tube 1000 degrees or 1200 degrees5, the advantage of high temperature electric heating radiant tube is chosen seamless cold drawn, thin-walled heat-resistant steel pipe (cr25ni20si2 cr25ni20si2 1 or 0), the product of thermal radiation is 10% higher than similar products6, the use of more than 8000 h of radiant tube using electrothermal alloy material should have high resistivity, high electric conversion.Placed in the casing of the radiation tube, heat transfer process is different from general skeleton type electric heating element, its heat shield, heating elements must be in the process of temperature control, prevent components overtemperature.Radiant tube closed heating, electric heating element surface temperature higher than the furnace temperature about 100 ℃ to 150 ℃.So when select material to analyze furnace temperature and atmosphere in furnace temperature, choosing the right heating material.