| 摘要 |
A clubhead of a golf club which is a metallic hollow clubhead includes: a face portion; a crown portion; a hosel portion; and a lower part including a sole portion and side portions, wherein: the hosel portion and the crown portion are welded to the lower part; and the lower part is pressed out of a material plate and is thereafter subjected to a chemical polishing so that a thickness of the lower part varies by position. |
