| 摘要 |
PURPOSE:To obtain pipe joints formed easily by using a very simple form and interconnected integrally with a pipe end by forming a connecting and engaging part, which can be freely attached to and detached from mating pipe joints to be connected, at the outer circumferential portion of a trunk section or the outer circumferential portion of an extended short cylindrical part. CONSTITUTION:Each of joints H, H formed integrally with a pipe end has an extended short cylindrical section H2, which is extended from a trunk section H1 surrounding an outer circumferential surface portion h1 of the pipe end where one or more i.e., about three lines of reinforcing ribs 4a are formed and, which is coupled with an extended outward portion h2 of the pipe. The outer circumferential portion of the short cylindrical section H2 is formed into a shape having a circumferential groove 8, as a connecting and engaging part, provided in a recessed state at a position corresponding to an annular protrusion 5d of form units 5, 5. A pair of corrugated pipes 4, 4 having the end parts thus formed are opposed to each other and interconnected together in a liquid- tight state. |
