管壁厚分级表
公称通径外径公称壁厚(T)
DN A系列B系列SCH5s SCH10s SCH20s SCH20 SCH30 SCH40 SCH60 SCH80 SCH100 SCH120 SCH140 SCH160
15 21.3 18 1.6 2.1 2.6 - - 2.9 - 3.6 - - - 4.5
20 26.9 25 1.6 2.1 2.6 - - 2.9 - 4 - - - 5.6
25 33.7 32 1.6 2.8 3.2 - - 3.2 - 4.5 - - - 6.3
32 42.4 39 1.6 2.8 3.2 - - 3.6 - 5 - - - 6.3
40 48.3 45 1.6 2.8 3.2 - - 3.6 - 5 - - - 7.1
50 60.3 57 1.6 2.8 3.2 3.6 - 4 - 5.6 - - - 8.8
65
76.1
76 2 3 3.6 4.5 - 5 - 7.1 - - - 10
(73)
80 88.9 89 2 3 4 4.5 - 5.6 - 8 - - - 11
90 101.6 - 2 3 4 4.5 - 5.6 - 8 - - - 12.5
100 114.6 108 2 3 4 5 - 5.9 - 8.8 - 11 - 14.2
125 139.7 133 2.9 3.4 4.5 5 - 6.3 - 10 - 12.5 - 16
150 168.3 159 2.9 3.4 5 5.6 - 7.1 - 11 - 14.2 - 17.5
200 219.1 219 2.9 4 5 6.3 7.1 8 10 12.5 16 17.5 20 22.2
250 273 273 3.6 4 6.3 6.3 8 8.8 12.5 16 17.5 22.2 25 28
300 323.9 325 4 4.5 6.3 6.3 8.8 10 14.2 17.5 22.2 25 28 32
350 355.6 377 4 5 - 8 10 11 16 20 25.8 28 32 36
400 406.4 246 4 5 - 8 10 12.5 17.5 22.2 28 30 36 40
450 457 478 4 5 - 8 11 14.2 20 25 30 36 40 45
500 508 529 5 5.6 - 9.5 12.5 16 20 28 32 40 45 50
550 558.8 580 6 6.4 9.5 9.5 12.5 16 22 29 35 41 48 54
600 609.6 630 6 6.4 9.5 9.5 14.3 17.5 25 31 39 46 52 60