| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a golf club head of a high strength while making it light in weight. SOLUTION: A golf club head which is surrounded by walls, is constituted by connecting two or more wall plate parts 10' and 10", and the bonding section which is the edge section of one wall plate part 10" is formed to be thicker than the vicinity of the bonding section of the wall plate part, and the bonding section is integrally bonded to the bonding section of the other wall plate part 10' which is adjacent, and the external surface of the integrally bonded section is formed into a smooth surface state.</p> |
