| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve hydraulic pressure resistance performance, and thin a wall and lighten a weight by winding and covering a expanded polyolefin resin made sheet around an outer peripheral surface of a receiving port part of a polyolefin resin made pipe joint. SOLUTION: A polyolefin resin made pipe joint 1 is constituted by continuously forming a sealing rubber ring 3 fitted to an annular recessed groove disposed on a joint main body 2, a split ring 4 for preventing slipping-off which is movably mounted on an inclining groove, and a transferring pipe part 6 disposed on a receiving port of the joint main body 2 which is composed thereof. An extending sheet layer 7 is wound around an outer peripheral surface of the joint main body 2 for composing an annular recessed groove and a back surface of the inclining groove. Since the polyolefin resin made pipe joint 1 is such constituted, the thin and light polyolefin resin made pipe having high inner pressure strength can be used in a using region of a compound high pressure pipe.</p> |
