| 摘要 |
Apparatus for plugging a plurality of cylindrical holes provided at an inner peripheral wall of a cylindrical container comprises a plurality of plugs to be inserted into the plurality of holes for plugging the same, a support ring assembly having an outer diameter smaller than an inner diameter of the container, and a beam assembly for operating the support ring assembly and the plugs. The support ring assembly supports the plugs on an inner side of the container after the plugs have been inserted into the cylindrical holes, respectively. |
