材质 
Φ10
10
9.6
19.3
18.7
7.5
6.5
Φ13
13
12.6
25.3
24.7
8.5
7.5
Φ16
16
15.6
32.3
31.7
8.5
7.5
Φ19
19
18.6
32.3
31.7
10.5
9.5
Φ22
22
21.6
35.3
34.7
10.5
9.5
Φ25
25
24.6
40.3
39.7
12.5
11.5