| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the durability of a club face. SOLUTION: In a golf club head 1, a face part 2 for hitting a ball is provided with a face plate 7 formed of a rolled stock 10 formed by the rolling. In the reference condition that his club 1 is placed on a horizontal surface HP at the regulated angleαof lie and an angle of loft, the face plate 7 is formed with 45 degree or less of an angle at an acute angle side formed between the rolling direction K when rolling and a face vertical line N formed when a vertical surface V crosses the face surface at a right angle.</p> |
