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ASME/ANSI B16.9、B16.28
Dimensions of Elbows and Returns
Nominal Pipe Size?? DN Outside Diameter at Bevel D?? ????????? Center to? End?????????????????????? Cantre to Cantre Back? to? Faces?
45-deg Elbows 90-deg Elbows 180-deg Elbows
B A P K
long Radius long Radius Short Radius long Radius Short Radius long Radius Short Radius
1/2 21.3 15.7 38.1 - 76.2 - 47.8 -
3/4 26.7 19.1 38.1 - 76.2 - 50.8 -
1 33.4 22.4 38.1 25.4 76.2 50.8 55.6 41.1
1? 1/4 42.2 25.4 47.8 31.8 95.3 63.6 69.9 52.3
1? 1/2 48.3 28.4 57.2 38.1 114.3 76.2 82.6 62
2 60.3 35.1 76.2 50.8 152.4 101.6 106.4 81
2 1/2 73 44.5 95.3 63.5 190.5 127 131.8 100.1
3 88.9 50.8 114.3 76.2 228.6 152.4 158.8 120.7
3 1/2 101.6 57.2 133.4 88.9 266.7 177.8 184.2 139.7
4 114.3 63.5 152.4 101.6 304.8 203.2 209.6 158.8
5 141.3 79.2 190.5 127 381 254 261.9 196.9
6 168.3 95.3 228.6 152.4 457.2 304.8 312.7 236.5
8 219.1 127 304.8 203.2 609.6 406.4 414.3 312.7
10 273.1 158.8 381 254 762 508 517.7 390.7
12 323.9 190.5 457.2 304.8 914.4 609.6 619.3 466.9
14 355.6 222.3 533.4 355.6 1066.8 711.2 711.2 533.4
16 406.4 254 609.6 406.4 1219.2 812.8 812.8 609.6
18 457.2 285.8 685.8 457.2 1371.6 914.4 914.4 685.8
20 508 317.5 762 508 1524 1016 1016 762
22 558.8 342.9 838.2 558.8 1676.4 1117.6 1117.6 838.2
24 609.6 381 914.4 609.6 1828.8 1219.2 1219.2 914.4
26 660.4 406 990.6 - - - - -
28 711.2 438.2 1066.8 - - - - -
30 762 469.9 1143 - - - - -
32 812.8 501.7 1219.2 - - - - -
34 863.6 533.4 1295.4 - - - - -
36 914.4 565.2 1371.6 - - - - -
38 965.2 599.9 1447.8 - - - - -
40 1016 632 1524 - - - - -
42 1066.8 660.4 1600.2 - - - - -
44 1117.6 695.5 1676.4 - - - - -
46 1168.4 726.9 1752.6 - - - - -
48 1219.2 758.9 1828.8 - - - - -
注：1）表中長半徑彎頭取自ASME/ANSI B16.9，短半徑取自ASME/ANSI B16.28　2）壁厚T見厚壁表
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