The present invention is a bent foot formed on one side end of the fixing plate is configured to overcome the height difference with the outdoor slab formwork caused by the insulation material pre-installed on the indoor slab formwork, and to be installed horizontally, the indoor slab It is to provide a sleeve for a gas pipe piping that can artificially damage the insulation buried in the bottom of the to avoid the side effects caused by condensation.;The sleeve for a gas pipe piping according to the present invention has a fixing plate 10 having a narrow width and a long length at an upper portion thereof, a connecting plate 20 extending below the fixing plate 10, and the connecting plate 20. In the configuration consisting of a passage pipe 30 is connected horizontally to the lower portion of the bottom to have a pipe passage (A) therein, is formed by bending any one side of both ends of the fixing plate 10 stepped upward It is to include a bent portion (10a) further.
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