| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a winding coil, around which a long material can be wound for storage and conveyed, and from which the long material can easily be removed as necessary. <P>SOLUTION: The winding coil 10 has at least two wall bodies 1, 2, and is cylindrically formed by jointing side join end faces of the adjacent wall bodies 1, 2. Welded joints 5a, 5b, 5c, 5d of the adjacent wall bodies 1, 2 are provided to have multiple stages at both circumferential sides, and the welded joints 5a, 5b, 5c, 5d extend in an almost parallel direction to a vertical direction. <P>COPYRIGHT: (C)2013,JPO&INPIT |
