| 摘要 |
A barrel has a sector-shaped main board and a polygonal base board. A plurality of periphery plates are disposed on a periphery of the polygonal base board. Each periphery plate has a periphery folding line and a round hole. The sector-shaped main board has a plurality of longitudinal folding lines, a connection plate, a plurality of rectangular plates, and a plurality of decoration plates. Each rectangular plate has a slot. Each decoration plate has a transverse folding line and an insertion protrusion. The connection plate and one of the rectangular plates are fastened together. Each periphery plate and each rectangular plate are fastened together by a bolt and a nut.
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