| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method to carry out corrosion preventive covering of a buried pipe joint part excellent in abrasion resistance without causing burring and peeling at a boundary part of a joint part covering and a pipe body covering with polyolefin resin by holding corrosion preventivity of the coupler part by a simple covering method at a construction site. SOLUTION: A welded joint part 2 is formed as corrosion preventive covered steel pipes 1a, 1b are welded. The corrosion preventive covered steel pipes 1a, 1b are applied with corrosion preventive coverings 3a, 3b by polyethylene resin except for coupler parts 2a, 2b on an outer periphery of a pipe body at a plant. Chlorinated polyethylene films 11a, 11b are applied on surface 3c, 3d of a pipe body anticorrosive covered end part. 4 is a welded part. A polyurethane resin covering 7 is applied on the joint parts 2a, 2b and surfaces of the films 11a, 11b.</p> |
