| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for accurately piping in a short time and a jig or the like used for embodying this method. SOLUTION: In this method for piping large diameter pipes 20a and 20b and mutually parallel plural rows of small diameter pipes 21 diverged from the large diameter pipes 20a and 20b, a flange 23 for joining pipe elements constituting the small diameter pipes 21 continuing in one direction is supportingly fixed beforehand in a predetermined position in a piping, the mutually parallel plural rows of small diameter pipes 21 diverged from the large diameter pipes 20a and 20b are arranged on the basis of the flange 23, the large diameter pipes 20a and 20b are arranged on the basis of the mutually parallel plural rows of small diameter pipes 21, and the laid overall pipe bodies are mutually joiningly fixed. A plate-like jig 1 is placed for holding the flange 23 in an accurate position on the piping. The pipe bodies are mounted on rotatable temporary pedestals 10 and 12, and after applying a predetermined process, the pipe bodies are mutually joined by welding.
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