Golf club head

1. A hollow golf club head comprising:

a face part;

a crown part;

a sole part;

a side part; and

a hosel part,

wherein the head has a volume of 300 to 460 cm3 and a weight of 175 to 220 g,

the crown part includes:

a large-thickness crown part formed along an overall edge thereof; and

a small-thickness crown part which is formed inside the large-thickness crown part and has a thickness less than a thickness of the large-thickness crown part, and

the side part includes:

a heel-side small-thickness side part formed at a heel side;

a toe-side small-thickness side part formed at a toe side;

a large-thickness side part which is formed at a portion of the side part other than the heel-side small-thickness side part and the toe-side small-thickness side part and has a thickness greater than thickness of the heel-side small-thickness side part and the toe-side small-thickness side part; and

a weighted large-thickness side part which is formed at a back side of the large-thickness side part and has a thickness greater than a thickness of an other portion of the large-thickness side part.

2. The golf club head according to claim 1 ,

wherein the large-thickness crown part has a thickness of 0.65 to 5.0 mm, and

the small-thickness crown part has a thickness of 0.1 to 0.65 mm.

3. The golf club head according to claim 1 ,

wherein the heel-side small-thickness side part has a thickness of 0.1 to 0.65 mm,

the toe-side small-thickness side part has a thickness of 0.1 to 0.65 mm, and

the large-thickness side part has a thickness of 0.65 to 5.0 mm.

4. The golf club head according to claim 1 ,

wherein the sole part includes:

a face-side large-thickness sole part formed at a face side; and

a small-thickness sole part which is formed adjacent to a back-side end of the face-side large-thickness sole part and has a thickness less than a thickness of the face-side large-thickness sole part.

5. The golf club head according to claim 4 ,

wherein the face-side large-thickness sole part has a thickness of 0.7 to 10.0 mm.

6. The golf club head according to claim 1 ,

wherein the sole part includes:

a back-side large-thickness sole part formed at a back side; and

a small-thickness sole part which is formed adjacent to a face-side end of the back-side large-thickness sole part and has a thickness less than a thickness of the back-side large-thickness sole part.

7. The golf club head according to claim 6 ,

wherein the back-side large-thickness sole part has a thickness of 0.7 to 10.0 mm.

8. The golf club head according to claim 1 ,

wherein the weighted large-thickness side part has a thickness of 0.65 to 10.0 mm.

9. The golf club head according to claim 1 , further comprising:

one or more screws attached to the sole part, the screws being made of a material having specific gravity different from a specific gravity of a material of the sole part.

10. The golf club head according to claim 1 , further comprising:

one or more screws attached to the side part, the screws being made of a material having specific gravity different from a specific gravity of a material of the side part.

11. The golf club head according to claim 9 ,

wherein the screw has a weight of 0.5 to 50 g.

12. The golf club head according to claim 1 ,

wherein the sole part has rigidity greater than a rigidity of the crown part.

13. The golf club head according to claim 1 ,

wherein the crown part and the side part are manufactured by a casting method.

14. The golf club head according to claim 1 ,

wherein the face part includes:

a section having a maximum thickness at a center thereof; and

an incline part which is formed outside the section having the maximum thickness and is gradually decreased.

15. The golf club head according to claim 1 ,

wherein the face member is fixedly attached to a body of the head by plasma welding.