| 摘要 |
PURPOSE:To form a special pipe which can be used steadily for a long time by padding via an elastic packing placed at the joint of a main pipe and a branch pipe to enable joining the pipes shock-absorbably with each other, avoiding crack generation and preventing water leakage. CONSTITUTION:An elastic packing 5 is placed between the periphery 1' of a connecting hole 4 made on a main pipe 1 and the contacting surface 2' at the tip of a branch pipe 2 to be fitted. This elastic packing 5 is formed in a circular flat plate, is attached directly or sticked with adhesive and is desirable to be held pressed before forming the padding 3. |
