Dimensions of long radius elbows and returns according to standard ASME B16.9

NPS
Outside diameter
Wall thickness
Identification
Schedule No.
Inside diameter
90° elbow
180° elbow
A (r)
O
K
[inch]
[mm]
[inch]
[mm]
[inch]
[mm]
[inch]
[mm]
[inch]
[mm]
[inch]
[mm]
1
1.315
33,4
0.133
3,38
STD
40
1.049
26,64
1.50
38
3.00
76
2.19
56
1 1/4
1.660
42,2
0.140
3,56
STD
40
1.380
35,08
1.88
48
3.75
95
2.75
70
1 1/2
1.900
48,3
0.145
3,68
STD
40
1.610
40,94
2.25
57
4.50
114
3.25
83
2
2.375
60,3
0.109
2,77
2.157
54,76
3.00
76
6.00
152
4.19
106
2
2.375
60,3
0.154
3,91
STD
40
2.067
52,48
3.00
76
6.00
152
4.19
106
2 1/2
2.875
73,0
0.203
5,16
STD
40
2.469
62,68
3.75
95
7.50
191
5.19
132
3
3.500
88,9
0.125
3,18
3.250
82,54
4.50
114
9.00
229
6.25
159
3
3.500
88,9
0.216
5,49
STD
40
3.068
77,92
4.50
114
9.00
229
6.25
159
3 1/2
4.000
101,6
0.141
3,58
3.718
94,44
5.25
133
10.50
267
7.25
184
3 1/2
4.000
101,6
0.226
5,74
STD
40
3.548
96,12
5.25
133
10.50
267
7.25
184
4
4.500
114,3
0.141
3,58
4.218
107,14
6.00
152
12.00
305
8.25
210
4
4.500
114,3
0.237
6,02
STD
40
4.026
102,26
6.00
152
12.00
305
8.25
210


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