Tolerance ASME B16.9
| All Fittings [Note(1) and (2)] |
Center-to-End Dimensions |
Overall Length of Reducers and Lap Joint Stub Ends, F,H |
Overall Length of Caps, E |
180-deg Returns |
| NPS |
DN |
Outside Diameter at Bevel, D[Notes(3) and (4)] |
Inside Diameter at End
[Notes(3) and (5)] |
90-deg and 45-deg Long and Short Radius Elbows and Tees.
A,B,C,M |
3D Radius
Elbows, A,B |
Center-to-Center Dimension, O |
Back-to-Face Dimension, K |
Alignment of Ends, U |
| 1/2to2 1/2 |
15-65 |
+1.6-0.8 |
0.8 |
2 |
3 |
2 |
3 |
6 |
6 |
1 |
| 3to3 1/2 |
80-90 |
1.6 |
1.6 |
2 |
3 |
2 |
3 |
6 |
6 |
1 |
| 4 |
100 |
1.6 |
1.6 |
2 |
3 |
2 |
3 |
6 |
6 |
1 |
| 5to8 |
125-200 |
+2.4 -1.6 |
1.6 |
2 |
3 |
2 |
6 |
6 |
6 |
1 |
| 10to18 |
250-450 |
+4.0 -3.2 |
3.2 |
2 |
3 |
2 |
6 |
10 |
6 |
2 |
| 20to24 |
500-600 |
+6.4 -4.8 |
4.8 |
2 |
3 |
2 |
6 |
10 |
6 |
2 |
| 26to30 |
650-750 |
+6.4 -4.8 |
4.8 |
3 |
6 |
5 |
10 |
... |
... |
... |
| 32to48 |
800-1200 |
+6.4 -4.8 |
4.8 |
5 |
6 |
5 |
10 |
... |
... |
... |
| NPS |
DN |
Center-to-End Diamensions |
NPS |
DN |
Angularity Tolerance |
| Outside Diameter of Lap, G |
Fillet Radius of Lap, R |
Lap
Thickness |
Off Angle, Q |
Off Plane, P |
| 1/2to2 1/2 |
15-65 |
+0,-1 |
+0,-1 |
+1.6,-0 |
1/2to4 |
15-100 |
1 |
2 |
| 3to3 1/2 |
80-90 |
+0,-1 |
+0,-1 |
+1.6,-0 |
5to8 |
125-200 |
2 |
4 |
| 4 |
100 |
+0,-1 |
+0,-2 |
+1.6,-0 |
10to12 |
250-300 |
3 |
5 |
| 5to8 |
125-200 |
+0,-1 |
+0,-2 |
+1.6,-0 |
14to16 |
350-400 |
3 |
6 |
| 10t018 |
250-450 |
+0,-2 |
+0,-2 |
+3.2,-0 |
18to24 |
450-600 |
4 |
`10 |
| 20to24 |
500-600 |
+0,-2 |
+0,-2 |
+3.2,-0 |
26to30 |
650-750 |
5 |
10 |
| 26to30 |
650-750 |
... |
... |
... |
32to42 |
800-1050 |
5 |
13 |
| 32to48 |
800-1200 |
... |
... |
... |
44to48 |
1100-1200 |
5 |
19 |
| a) All dimensions are in mm. |
| b) Tolerances are equal plus and minus except as noted. |
| Notes: |
| 1) The inside diameter and the nominal wall thicknesses at ends are to be specified by the purchaser. |
| 2) A minimum wall thickness of 87.5% applies unless the purchaser specifies a different wall thickness tolerance. |
| 3) Out-of-round is the sum of absolute values of plus and minus tolerances. |
| 4) This tolerance may not apply in localized areas of formed fittings where increased wall thckness is required to meet design requirements of ASME B16.9 para 2.2 |
| 5) Unless otherwise specified by the purchaser,these tolerances apply to the nominal inside diameter,which equals the difference between the nominal outside diameter and twice the nominal wall thickness. |
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