| 摘要 |
<p>PROBLEM TO BE SOLVED: To restrict the dissolution of a reinforcing layer due to the electrolytic corrosion by contacting a metal more corrosive than stainless steel with at least any one of the reinforcing layer and a connecting fitting. SOLUTION: A band steel 7, which contacts with a reinforcing layer 5, is arranged near a connecting fitting 6 fitted to both ends of a water supplying hose 3. Since the band steel 7 is a metal more corrosive than a stainless steel wire of the reinforcing layer 5, namely, the band steel 7 has a stronger ionizing trend, in the environment, in which electrolytic corrosion is easy to be generated, the band steel 7 more corrosive than the stainless steel is firstly dissolved. As a result, dissolution of the stainless steel wire can be previously prevented. The band steel 7 is firstly dissolved because a nipple of the copper alloy works as a negative electrode and the band steel 7 works as a positive electrode. In the case where a distance between both the electrodes is more than a necessity, electrical resistance between the stainless steel wire and the solution becomes large, and electrical circuit is hard to be generated between the nipple and the band steel 7, and corrosion can not be prevented. With this reason, the band steel 7 is arranged near the nipple.</p> |
