Golf club head with textured striking face

A golf club head comprising:

• a heel portion;
• a toe portion opposite the heel portion;
• and
• a striking face, the striking face including:
• a plurality of score lines each having an average depth no less than about 0.10 mm;
• a first micro-groove pattern comprising a plurality of first micro-grooves, each of the first micro-grooves having a first cross-sectional profile defining a first average depth no greater than about 0.025 mm and a first average width, the first micro-grooves being substantially parallel to one another;
• and
• a second micro-groove pattern comprising a plurality of second micro-grooves, each of the second micro-grooves having a second cross-sectional profile defining a second average depth no greater than about 0.025 mm and a second average width, the second micro-grooves being substantially parallel to one another, wherein the second micro-groove pattern is overlaid onto the first micro-groove pattern;
• and
• wherein the first cross-sectional profile is different from the second cross-sectional profile.

A method comprising:

• forming a first textured surface pattern in a striking face of a golf club head main body, the first textured surface pattern imparting a surface roughness value to the striking face, wherein forming the first texture surface pattern comprises:
• forming a first micro-groove pattern comprising a plurality of first micro-grooves that are substantially parallel to one another, each of the first micro-grooves having a first cross-sectional profile that defines a first average depth and a first average width;
• and
• forming, by superimposing onto the first micro-groove pattern, a second micro-groove pattern comprising a plurality of second micro-grooves that are substantially parallel to one another, each of the second micro-grooves having a second cross-sectional profile that defines a second average depth and a second average width, wherein the first cross-sectional profile is different from the second cross-sectional profile.