| 摘要 |
PROBLEM TO BE SOLVED: To provide a protective member easily attachable to and detachable from a tubular body with an excellent effect of improving the durability of the tubular body, and a manufacturing method thereof. SOLUTION: In the protective member 1 to be provided on the outer circumferential surface of the tubular body for protecting the surface of the tubular body which contacts with a gas fluid, and the manufacturing method thereof, the protective member is composed of a hollow cylindrical matter formed by rolling an elastically deformable single-layer or laminated sheet 2 with opposed end parts 2a and 2b of the sheet 2 being overlapped. The end parts 2a and 2b are overlapped at an angle 2αof 5 to 60°to a circular center o on the circumference of the cylindrical matter, and the overlapping parts of the end parts 2a and 2b are released in the circumferential direction without adhesion so as to be attachable to and detachable from the tubular body. COPYRIGHT: (C)2008,JPO&INPIT
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