| 摘要 |
PROBLEM TO BE SOLVED: To provide a coupling, a pipe and a piping structure capable of confirming water leakage early at the time of a water filling test.SOLUTION: The structure includes: a connection to connect a pipe for guiding water; a cut-off part to be formed in the connection; and a water absorption member 14 for absorbing water leaked from the cut-off part. The water absorption member 14 has a base end part arranged nearer to the water leakage side than the cut-off part, and a tip, which is opposite to the base end part, extending to depart from the connection.SELECTED DRAWING: Figure 1 |
