| 摘要 |
A gas cylinder (1) comprising a cylinder body (2), a supporting part (11) with one or more resting portions (12) protruding towards a lower side (7) of the cylinder (1), a protection ring (13) manufactured separately and then mounted to the supporting part (11) and having an annular slot (14) which accommodates said one or more resting portions (12) and a resting surface (15) facing the lower side (7) and free from metal edges. |
