1 英寸=25.4毫米 =8英分
|
公称尺寸inch |
inch |
公称通径DN |
国标A |
国标B |
美标 |
日标 |
|
1/8" |
|
6 |
|
|
10.3 |
|
|
1/4" |
|
8 |
|
|
13.7 |
|
|
3/8" |
|
10 |
|
|
17.1 |
|
|
1/2" |
0.840 |
15 |
21.3 |
18 |
21.3 |
|
|
3/4" |
1.050 |
20 |
26.9 |
25 |
26.7 |
27.2 |
|
1" |
1.315 |
25 |
33.7 |
32 |
33.4 |
34 |
|
11/4" |
1.660 |
32 |
42.4 |
38 |
42.2 |
42.7 |
|
11/2" |
1.900 |
40 |
48.3 |
45 |
48.3 |
48.6 |
|
2" |
2.375 |
50 |
60.3 |
57 |
60.3 |
60.5 |
|
21/2" |
2.875 |
65 |
76.1 |
76 |
73.0 |
76.3 |
|
3" |
3.500 |
80 |
88.9 |
89 |
88.9 |
89.1 |
|
31/2" |
|
90 |
|
|
101.6 |
101.6 |
|
4" |
4.500 |
100 |
114.3 |
108 |
114.3 |
114.3 |
|
5" |
5.563 |
125 |
139.0 |
133 |
141.3 |
139.80 |
|
6" |
6.625 |
150 |
168.3 |
159 |
168.3 |
165.20 |
|
8" |
8.625 |
200 |
219.1 |
219 |
219.1 |
216.30 |
|
10" |
10.750 |
250 |
273.0 |
273 |
273.1 |
267.40 |
|
12" |
12.750 |
300 |
323.9 |
325 |
323.9 |
318.50 |
|
14" |
14.000 |
350 |
355.6 |
377 |
355.6 |
355.60 |
|
16" |
16.000 |
400 |
406.4 |
426 |
406.4 |
406.40 |
|
18" |
18.000 |
450 |
457.0 |
478 |
457.2 |
457.20 |
|
20" |
20.000 |
500 |
508.0 |
529 |
508.0 |
508.00 |
|
22" |
22.000 |
550 |
559.0 |
|
558.8 |
558.00 |
|
24" |
24.000 |
600 |
610.0 |
630 |
609.6 |
609.60 |
|
26" |
26.000 |
650 |
660.0 |
|
660.4 |
660.40 |
|
28" |
28.000 |
700 |
711.0 |
720 |
711.2 |
711.20 |
|
30" |
30.000 |
750 |
762.0 |
|
762.0 |
762.00 |
|
32" |
32.000 |
800 |
813.0 |
820 |
812.8 |
812.80 |
|
34" |
34.000 |
850 |
864.0 |
|
863.6 |
863.60 |
|
36" |
36.000 |
900 |
914.0 |
920 |
914.4 |
914.40 |
|
38" |
38.000 |
950 |
965.0 |
|
965.2 |
965.20 |
|
40" |
40.000 |
1000 |
1016.0 |
1020 |
1016.0 |
1016.00 |
|
42" |
42.000 |
1050 |
1067.0 |
|
1066.8 |
1066.80 |
|
44" |
44.000 |
1100 |
1118.0 |
1120 |
1117.6 |
1117.60 |
|
46" |
46.000 |
1150 |
1168.0 |
|
1168.4 |
1168.40 |
|
48" |
48.000 |
1200 |
1219.0 |
1220 |
1219.2 |
1219.20 |
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