Patent ID: 8758162

Claim:
A golf club head comprising a plurality of scorelines are formed in a face surface thereof at an equal pitch, wherein rounded portions are formed on edges of the scorelines, each region between adjacent scorelines includes a fine groove formation region in which N (N≧2) fine grooves are formed to extend parallel to the scorelines and to align themselves in a direction perpendicular to the scorelines at an interval d (d≧0), and letting S be a distance between endpoints of the rounded portions of the adjacent scorelines, Wt be a sum total of widths of all the fine grooves, A1 be a distance from the endpoint of the rounded portion of one scoreline of the adjacent scorelines to the fine groove formation region, A2 be a distance from the endpoint of the rounded portion of the other scoreline of the adjacent scorelines to the fine groove formation region, and Wmax be a maximum width of the widths of the fine grooves, 0 ≦A 1 +A 2 <W max+ d, A 1 =A 2, and Wt+d ×( N− 1)+ A 1 +A 2 =S.