Multiwound tube apparatus for manufacturing a preparation and multiwound tube multiwound tube

Multiwound tube (10) is configured to include a core material layer formed of a metal material (18) brazing material layer formed of a metal material having low melting point than the core layer (18) and (20) metal plate (13) rolled into rolled and formed tube (12), is formed on the wound superimposed portions of the metal plate (13), the heat of the tube laser irradiated to (12) (L) in a brazed joint winding overlapped portion of the metal plate (13) by molten brazing material layer (20) and (14), the.