材质 
Φ12
13.43
13
37
36.38
3.3
2.5
Φ14
15.43
15
44
43.38
3.3
2.5
Φ16
17.43
17
50
49.38
3.3
2.5
Φ18
19.52
19
56
55.26
4.3
3.5
Φ20
21.52
21
60
59.26
4.3
3.5
Φ22
23.52
23
66
64.8
5.3
4.5
Φ24
25.52
25
72
70.8
5.3
4.5
Φ27
28.52
28
85
83.6
6.3
5.5
Φ30
31.62
31
92
90.6
6.3
5.5
Φ33
34.62
34
105
103.6
8.3
7.5
Φ36
37.62
37
110
108.6
8.3
7.5
Φ39
40.62
40
120
118.6
8.3
7.5
Φ42
43.62
43
125
123.4
8.3
7.5