The present invention is provided in each bulkhead that divides a cabin or cargo room, and in the event of a fire in a cabin or cargo room, it blocks the movement of flame and heat to other cabins through the pipe and is applied to protect the pipe passing through each bulkhead. It's about through-holes.
In a ship pipe penetration hole for protecting a pipe by penetrating a bulkhead such as a wall or ceiling dividing between cabins, the inside is hollow, the inside diameter is relatively larger than the outside diameter of the pipe, and the middle outer circumference through the bulkhead body is It is characterized in that it is composed of a through pipe welded and fixed to the bulkhead, and a cylindrical heat insulating material made of a flame retardant material, the outer surface of which is closely fixed to the inner surface of the through tube, and the pipe is penetrated and mounted on the inner surface.