| 摘要 |
PROBLEM TO BE SOLVED: To a provide a heat insulation pipe, especially suited for piping for air conditioning for embedding, constituted that a temperature difference between the air temperature in the vicinity of a line inlet and the air temperature in the vicinity of a line outlet forms an approximately the same temperature rapidly after air supply, cost is low and heat insulating performance is not lost over a long period, and thus a labor and a time for repair are not required. SOLUTION: A heat transfer pipe is used in the transfer of high-temperature or low-temperature gas and a heat insulation pipe for air supply is formed that a heat-insulating material is laminated on the inner surface of a pipe. Further, a heat-insulating material is a heat insulation material formed of a heat-insulating material part and a protective material part, and the heat- insulating material parts are laminated on the inner side of the pipe. |
