德国DIN标准
|
SIZE
|
A
|
B
|
|
25
|
62.5
|
82.0
|
|
40
|
75.0
|
95.5
|
|
50
|
87.5
|
109.0
|
|
65
|
95.0
|
137.0
|
|
80
|
115.0
|
148.0
|
|
100
|
155.0
|
164.0
|
|
ISO标准
|
SIZE
|
A
|
B
|
|
1"
|
62.5
|
82.0
|
|
1-1/2"
|
75.0
|
95.5
|
|
2"
|
87.5
|
109.0
|
|
2-1/2"
|
95.0
|
137.0
|
|
3"
|
115.0
|
148.0
|
|
4"
|
155.0
|
164.0
|
|
美国3A标准
|
SIZE
|
A
|
B
|
|
1"
|
75
|
76.0
|
|
1-1/2"
|
75
|
89.6
|
|
2"
|
75
|
103.3
|
|
2-1/2"
|
75
|
118.2
|
|
3"
|
75
|
131.2
|
|