| 摘要 |
<p>PURPOSE:To secure perfect water stopping ability by providing a saddle part on a outer periphery of a tube body, also providing a branch connection part which has a receiving part and a connection part, and extending a cylindrical expansion/contraction sheet to be adhered to the inner surface of the tube body from an end of the connection part. CONSTITUTION:An adhesive 3 is coated on a peripheral edge of a branch hole 12 of a ribbed tube 1, while a connection part 23 of a branch connection tube 22 is connected to the branch hole 12. Then, a saddle 21 is adheringly connected to a surface of the adhesive 3. A diameter expanding jig is arranged in the branch connection tube 22 of a tube joint 2 and over the inside of the tube 1. An expansion/contraction sheet 4 extended from an end of the connection part 23 is bonded to an inner surface of the tube 1 on the peripheral edge of the branch hole 1. As a result, ability of water stopping from the inside of the tube is improved without projection into the tube and with a slight thickness of the sheet.</p> |
