直径
|
t
|
r
|
R
|
B
|
f
|
b
|
D d
|
||||||
≤50
|
0.8
|
1.0
|
1.0
|
—
|
—
|
—
|
1.0
|
1.6
|
1.6
|
—
|
—
|
—
|
|
1.6
|
3.0
|
6.0
|
5.0
|
1.6
|
4.0
|
|
>50~120
|
2.0
|
4.0
|
10
|
8.0
|
2.0
|
6.0
|
2.5
|
5.0
|
16
|
10
|
2.0
|
8.0
|
|
3.0
|
6.0
|
20
|
12
|
2.5
|
10
|
|
>120
|
4.0
|
8.0
|
25
|
16
|
3.0
|
12
|
5.0
|
10
|
32
|
20
|
3.0
|
16
|
|
6.0
|
12
|
40
|
25
|
4.0
|
20
|