| 摘要 |
PROBLEM TO BE SOLVED: To provide an underground buried pipe regenerating pipe material which has a small number of components, has a simple structure, can be easily manufactured, can smoothly perform a connection work of the pipe material without being influenced by surrounding circumstances and without accompanying complexity, moreover, can fill back-filling material evenly upon a back-filling work, has high strength and is excellent in chemical resistance.SOLUTION: In a pipe material 1 for the existing pipe regeneration, used for successively introducing a number of short-size pipe materials into an underground buried existing pipe, successively connecting the pipe materials in the length direction and laying and integrating the pipe materials for regeneration in the existing pipe, an outer circumferential surface of one side first end part 11 of a connection end part of the pipe material constitutes a first tapered part formed in a tapering-off first tapered surface 11a, and an inner circumferential surface of a second end part as the other connection end part has a second tapered surface 12a which is tightly fit to the first tapered part. |
