Protective well for underground hydrant

The utility model relates to a protective cylinder for an underground fire hydrant. The disasters that a fire hydrant is flooded by water in summer and is frozen by the water in winter can be avoided. A steel cylinder 2 with a bottom 3 is arranged in a well provided with the fire hydrant 11. The low...

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Bibliographische Detailangaben
1. Verfasser: LIANCHENG GAO
Format: Patent
Sprache:eng
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