| 摘要 |
<p>Multi-duct flexible pipe For automotive, naval and aeronautical use, and for heating and air-conditioning, for transfer of liquids, gases or vapours, or for use in installations working under pressure, the tube has a layer surrounding it near the outside. The spaces between the individual ducts, and between them and the envelope layer, are filled with padding and elastic reinforcing material of cellular structure. The envelope is of cellular plastics or conventional solid plastics. Pref. the plastics is polyurethane. The individual ducts are pref. a thermoplastics material.</p> |
