Pipe insulation apparatus having finishing cover of compression-bonded structure

A pipe insulation apparatus which includes elbow insulation units that are applied on the outer surfaces of elbows of pipes, T-joint insulation units that are applied on the outer surfaces of T-joints of the pipes, straight-pipe insulation units that are applied on the outer surfaces of straight pipes of the pipes, and flange insulation units that are applied on the outer surfaces of flange portions of the pipes, wherein:

• each of the elbow insulation units, the T-joint insulation units, the straight-pipe insulation units, and the flange insulation units includes a plurality of segments which is connected so as to be separable along division lines, and each of the plurality of segments is composed of a plurality of insulation layers, and is covered by a finishing cover,
• the finishing cover includes:
• at least one joint chassis that is made of a soft metal material, and has a first insertion groove and a second insertion groove formed at a first end portion and a second end portion, respectively, and has a saw-toothed first protrusion formed on one inner side surface of each of the first insertion groove and the second insertion groove and a saw-toothed second protrusion formed alternately with the first protrusion on the other inner side surface;
• and
• a plurality of plates that is made of a soft metal material, and
• in a manner in which one end portion of a first plate which is any one of the plurality of plates is inserted into the first insertion groove, and one end portion of a second plate to be adjacent to the first plate is inserted into the second insertion groove, and then at least one joint chassis is compressed such that the first plate and the second plate are connected, the plurality of plates and at least one joint chassis are connected so as to correspond to the curved surfaces of the pipes.