What is claimed is: 1. A method for heating and sterilizing barrels, preferably by means of steam treatment, of reusable barrels, in particular metallic reusable barrels,In such a stage of the pressure of the steam treatment, the interior space of the barrel of each barrel is subjected to the action of water vapor under pressure by the steam source, Subsequently, the connection to the steam source is interrupted, so that in the holding time or action time of the subsequent pressure step, with the increasing condensation of water vapor on the inner side of the barrel and barrel fittings, the barrel and barrel fittings Heating and sterilization are performed.樽を、好ましくは再利用可能な樽を、特に金属製の再利用可能な樽を、蒸気処理により加熱および殺菌するための方法であって、蒸気処理の圧力のかかる段階において、各々の樽の樽内部空間が水蒸気源により圧力下の水蒸気の作用を受け、 続いて、水蒸気源への接続が中断され、従って続いて圧力のかかる段階の保持時間あるいは作用時間において、樽および樽取付具の内側面での水蒸気の増大する凝縮でもって、樽および樽取付具の加熱と殺菌が行われる。