To provide the device for filling and discharging, by which the loss of heat energy can be suppressed and energy-saving can be obtained, further which is excellent in the heat insulation property of the filling material in a melting state, and having a constitution by which the material quality of the filling material is not deteriorated.

A lower stage housing part 3 in which hollow double straight tubes 2 forming an annular hollow part between internal tube and external tube which are coaxially arranged, are housed and arranged, an upper stage housing part 5 in which hollow double bent tubes 4 bent into a required shape under a condition in which the filling material is filled, are housed and arranged, and a filling nozzle 27 arranged between the lower stage housing part 3 and the upper stage housing part 5, are provided respectively And, the filling material in the melting state, which is heated in the upper stage housing part 5, and discharged from the inside of the hollow double bent tubes 4, is directly filled into the inside of the hollow part of the hollow double straight tubes 2 arranged inside the lower stage housing part 3 through a filling nozzle 27.