材质 
Φ12
13.43
13
24
23.48
3.3
2.5
Φ14
15.43
15
28
27.48
3.3
2.5
Φ16
17.43
17
30
29.48
3.3
2.5
Φ18
19.52
19
34
33.38
4.3
3.5
Φ20
21.52
21
37
36.38
4.3
3.5
Φ22
23.52
23
39
38.38
5.3
4.5
Φ24
25.52
25
44
43.38
5.3
4.5
Φ27
28.52
28
50
49.38
6.3
5.5
Φ30
31.62
31
56
55.26
6.3
5.5
Φ33
34.62
34
60
59.26
8.3
7.5
Φ36
37.62
37
66
64.8
8.3
7.5
Φ39
40.62
40
72
70.8
8.3
7.5
Φ42
43.62
43
78
76.8
8.3
7.5