Golf club head
A golf club head of this invention includes a face and a plurality of striations formed on the face by milling. A pitch P in the arrangement direction of the plurality of striations satisfies 300 μm≦P≦600 μm. The surface roughness of a region in the face with the striations satisfies in the maximum height of the profile Ry, 15 μm≦Ry≦0.005×P+15.7 μm.
1. A golf club head including:
a face;
a plurality of score line grooves formed on the face; and
a plurality of striations formed on said face by milling,
wherein a pitch P in an arrangement direction of said plurality of striations satisfies
300 μm≦P≦600 μm,
a surface roughness of a region in said face with said striations satisfies in a maximum height of profile Ry, where
15 μm≦ Ry≦ 0.005 ×P+ 15.7 μm,
said striations do not intersect with each other on said face, and
each score line groove intersects with a plurality of said striations.
2. The golf club head according to claim 1 , wherein the pitch P satisfies
400 μm≦P≦500 μm.
3. The golf club head according to claim 1 , wherein each striation forms a circular arc, and said arrangement direction is a direction that intersects the center of the circular arc of each striation.
4. The golf club head according to claim 3 , wherein a radius of each circular arc is the same.