| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin connection pipe superior in pressure-proof strength, superior in flexibility, having bending performance, reducing weight, and easy in handling, by easily and surely connecting one end part to a hard drain port and the other end part to a hose made of a soft synthetic resin. SOLUTION: A cylindrical soft joint part 2 composed of the soft synthetic resin is integrally arranged in one end part of a soft synthetic resin pipe body 1 having pressure-proof strength and flexibility by winding a hard synthetic resin spiral projection strip 4 on an outer peripheral surface. The hard synthetic resin spiral projection strip 4 and a cylindrical hard joint part 3 composed of the same resin are arranged in the other end part. The soft joint part 2 is connected to the hard drain port, and the hard joint part to the synthetic resin hose, respectively directly, without using a joint member. COPYRIGHT: (C)2009,JPO&INPIT |
