| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal pipe with a pattern which is light in weight, has rust preventive properties, water resistance, fireproofing properties, and durability, and is beautiful in appearance and its processing method. SOLUTION: An uneven pattern or a grain pattern is formed on a metal pipe 1 on which thermosetting resins 3, 4, and 5 are laminated by rotating a roller 8 having recesses and protrusions formed thereon. After that, a thermosetting resin 6 is applied, baked, dried, and cooled. |
