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Tolerances of Dimensions for ASME B16.9 BW Pipe Fittings
1. Tolerances of dimensions for ASME B16.9 BW Pipe Fittings Part 01
|
All Fittings
|
Center to End
Dimensions of 90D Elbows and Tees, A, B, C, M |
Overall Length
of Reducers and Stub Ends, F, H |
Overall
Length of Caps, E |
|||
|
Norminal
Pipe Size (NPS) |
DN
|
Outside
Diameter at Bevel, D |
Inside
Diameter at End |
|||
|
1/2 to 2 1/2
|
15-65
|
+1.6,-0.8
|
0.8
|
2
|
2
|
3
|
|
3 to 3 1/2
|
80-90
|
1.6
|
1.6
|
2
|
2
|
3
|
|
4
|
100
|
1.6
|
1.6
|
2
|
2
|
3
|
|
5 to 8
|
125-200
|
+2.4,-1.6
|
1.6
|
2
|
2
|
6
|
|
10 to 18
|
250-450
|
+4.0,-3.2
|
3.2
|
2
|
2
|
6
|
|
20 to 24
|
500-600
|
+6.4,-4.8
|
4.8
|
2
|
2
|
6
|
|
26 to 30
|
650-750
|
+6.4,-4.8
|
4.8
|
3
|
5
|
10
|
|
32 to 48
|
800-1200
|
+6.4,-4.8
|
4.8
|
5
|
5
|
10
|
2. Tolerances of dimensions for ASME B16.9 BW Pipe Fittings Part 02
|
180D RETURNS
|
||||
|
Norminal
Pipe Size (NPS) |
DN
|
Center to
Center Dimension, O |
Back to Face
Dimension, K |
Alignment
of Ends, U |
|
1/2 to 2 1/2
|
15-65
|
6
|
6
|
1
|
|
3 to 3 1/2
|
80-90
|
6
|
6
|
1
|
|
4
|
100
|
6
|
6
|
1
|
|
5 to 8
|
125-200
|
6
|
6
|
1
|
|
10 to 18
|
250-450
|
10
|
6
|
2
|
|
20 to 24
|
500-600
|
10
|
6
|
2
|
|
26 to 30
|
650-750
|
...
|
...
|
...
|
|
32 to 48
|
800-1200
|
...
|
...
|
...
|
3. Tolerances of dimensions for ASME B16.9 BW Pipe Fittings Part 03
|
Norminal
Pipe Size (NPS) |
DN
|
Lap Joint Stub Ends
|
||
|
Outside
Diameter at Lap, G |
Fillet Radius
of Lap, R |
Lap Thickness
|
||
|
1/2 to 2 1/2
|
15-65
|
+0,-1
|
+0,-1
|
+1.6,-0
|
|
3 to 3 1/2
|
80-90
|
+0,-1
|
+0,-1
|
+1.6,-0
|
|
4
|
100
|
+0,-1
|
+0,-2
|
+1.6,-0
|
|
5 to 8
|
125-200
|
+0,-1
|
+0,-2
|
+1.6,-0
|
|
10 to 18
|
250-450
|
+0,-2
|
+0,-2
|
+3.2,-0
|
|
20 to 24
|
500-600
|
+0,-2
|
+0,-2
|
+3.2,-0
|
|
26 to 30
|
650-750
|
...
|
...
|
...
|
|
32 to 48
|
800-1200
|
...
|
...
|
...
|
4. Tolerances of dimensions for ASME B16.9 BW Pipe Fittings Part 04
|
Norminal Pipe Size
(NPS) |
DN
|
Angularity Tolerances
|
|
|
Off Angle, Q
|
Off Plane, P
|
||
|
1/2 to 4
|
15-100
|
1
|
2
|
|
5 to 8
|
125-200
|
2
|
4
|
|
10 to 12
|
250-300
|
3
|
5
|
|
14 to 16
|
350-400
|
3
|
6
|
|
18 to 24
|
450-600
|
4
|
10
|
|
26 to 30
|
650-750
|
5
|
10
|
|
32 to 42
|
800-1050
|
5
|
13
|
|
44 to 48
|
1100-1200
|
5
|
19
|
5. Notes:
1) All dimensions are in mm.
2) For dimensions of pipe fittings, please see the table chart.
3) Tolerances are equal plus and minus except as noted.
4) The inside diameters or wall thicknesses at ends are to be specified by the purchasers.
Views: Author：hbmetals Date:15/05/01