| 摘要 |
<p>PURPOSE: To certainly maintain water-tightness or air-tightness, ensure a sufficient strength, maintain good anti-corrosiveness, and reduce the weight of the construction. CONSTITUTION: A pipe fitting is composed of an inner tube 11 of synthetic resin provided with tubing insert holes 11a, 11b at the ends and an outer pipe 12 made of metal to be fitted on the inner pipe 11, wherein elastically deformable ribs 14 are provided protrusively on the outside surface of the inner pipe 11 consolidatedly, and when the outer pipe 12 is fitted on the inner pipe 11, the ribs 14 are deformed elastically and put in pressure contact with the inside surface of the outer pipe 12.</p> |
