| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide the corrosion prevention structure of steel, which everlastingly prevents corrosion of the steel and has excellent execution property. <P>SOLUTION: A steel pipe 10 is protected in a multi-layered manner by a first layer 16 and a second layer 18 having different corrosion prevention actions. The first layer 16 is formed by applying ordinary temperature galvanizing to the steel pipe 10 subjected to surface preparation and protects the steel pipe 10 from corrosion by a sacrificial corrosion prevention action. The second layer 18 is formed by curing of an ordinary temperature liquid glass coating material applied to the first layer 16, protects the steel pipe 10 from corrosion by a physical corrosion prevention action of intercepting the passage of oxygen and water and checking the sticking of harmful fine particles, and further protects the first layer 16 from deterioration with time. <P>COPYRIGHT: (C)2012,JPO&INPIT |
