To　reduce　the　transmission　of　vibration　energy　from　the　ship＇s　pipeline　to　the　bulkhead,　a　novel　all-metal　pipe　element　passing　through　the　bulkhead　with　symmetrical　elastic　installation　was　proposed　in　this　paper.　A　metal　bellow,　a　multi-layer　thin-walled　symmetrical　structure,　was　used　as　an　elastic　element　and　entangled　metallic　wire　materials　(EMWM)　were　used　as　a　damping　element.　The　insertion　loss　was　adopted　to　evaluate　the　vibration　damping　performance.　The　results　show　that　compared　with　the　pipe　element　passing　through　the　bulkhead　with　rigid　installation,　the　vibration　damping　performance　of　the　pipe　element　passing　through　bulkhead　with　symmetrical　elastic　installation　can　significantly　isolate　the　vibration　transition,　and　the　maximum　average　insertion　loss　in　each　direction　can　reach　25.4　dB.　A　thermal-vibration　joint　test　system　of　the　pipe　element　passing　through　the　bulkhead　was　built.　A　series　of　comparison　experiments　were　carried　out　to　investigate　the　influence　of　temperature,　symmetrical　measure　points,　and　exciting　directions　on　the　vibration　response　transmitted　to　the　bulkhead.　Therefore,　the　vibration　damping　performance　was　verified.