| 摘要 |
PURPOSE: To provide an anticorrosive resin coating structure excellent in corrosion resistance, weather resistance and chemical resistance to be also mechanically tough with also a high heat resistant temperature. CONSTITUTION: As necessary, a steel pipe 1 having a copper layer is formed. Next on a peripheral surface of the steel pipe 1, a zinc or zinc nickel plating layer 3 is formed, and on this inc or zinc nickel plating layer 3, a chromate layer 4, composed of a trivalent chrome compound, is formed. As necessary through an epoxy resin intermediate layer 5, at least a single layer, polyvinyl fluoride or polyvinylidene fluoride layer 6 is formed. |
