作者: Luciano Cippitani
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摘要: Liquid propane gas tanks for vehicles, and cylindrical in particular, wherein end (1) of cylinder (2) is provided with a cavity (3) housing the valve group ring (4), or rings case embodiment designed foreign market, shaped such manner as to fit perfectly inside cavity; preferred embodiment, has walls (6) (7) at right angles placed curved so be flush-mounted (2).