Nominal Dia
a
b
D
DN
mm
80
19.0
16.0
200
100
220
150
285
20.0
17.0
340
250
22.0
400
300
24.5
20.5
455
350
26.5
22.5
520
28.0
24.0
580
450
30.0
26.0
640
500
31.5
27.5
775
600
36.0
31.0
840
700
34.5
910
750
41.0
970
800
43.0
38.0
1025
900
46.5
41.5
1125
1000
50.0
45.0
1255
1100
53.5
48.5
1355
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