It is used for heating in electric water heater.We can design different kinds of specifications and external dimension heaters which have passed strict safe performance test and still pressure test with safety and reliability.     Heater adopts high quality stainless steel,alloy heating wire,electrical melting MgO powder etc.to make the heating elements after passing advanced technology such as coiling wire,shrinking tube,removing humidity and sealing etc..The connection between flange and heating tube adopts Hydrogen arc welding and vacuum lead welding to guarantee the heater without leakage under high voltage.     Heater can be designed into double power tubes and single power tube according to the customers'request.