| 摘要 |
<p>PROBLEM TO BE SOLVED: To make a sweet area wider and centroid lower. SOLUTION: This club head is constituted by forming a recessed part 4 on the back face 2b side corresponding to the club face 2a in the ball hitting part 2 of a head 1 consisting of a metallic preform molded by a powder metal injection molding means. The sole face 2c side thereof is formed to a thick and broad bulging part 5 and the inner peripheral part 4a on the club-face 2a side of the recessed part 4 on the back face side is provided with a slit 6.</p> |
