規(guī)格D
Фmm
Ф1 mm
S mm
1/2"
26.5
18
2.5
3/4"
35
25
3.0
1"
43
32
3.3
1.5"
56
45
3.5
2"
71
58
4.0
3"
99
85
4.7
4"
131
113
5.6
7"
196
180
7.0
9"
250
230
7.5