Tolerance For butt Welding Fittings
ASME/ANSI B16.9

Tolerances are in millimeters. mm
ASME / ANSI B16.9 |
All Fittings |
90กใ, 45กใ
Elbows and Tees |
Reducers |
Caps |
180กใ Returns |
Angularity Tolerance |
Nominal
Pipe Size |
Outside
Diameter
at Bevel |
Inside
Diameter
at End |
Wall
Thickness |
Center to End Dimension |
Overall
Length |
Overall
Length |
Center to
Center
Dimension |
Back to
face
Dimension |
Alignment
of Ends |
Nominal
Pipe Size |
off
Angle |
off
Plane |
(in) |
D |
กก |
t |
A.B.C.M |
H |
E |
O |
K |
U |
(in) |
Q |
P |
1/2to 21/2 |
+1.52-0.76 |
0.76 |
Not Less Than 87.5% of Nominal Thickness |
1.52 |
1.52 |
3.05 |
6.35 |
6.35 |
0.76 |
1/2 to 4 |
0.76 |
1.51 |
3 to 31/2 |
1.52 |
1.52 |
1.52 |
1.52 |
3.05 |
6.35 |
6.35 |
0.75 |
5 to 8 |
1.52 |
3.05 |
4 |
1.52 |
1.52 |
1.52 |
1.52 |
3.05 |
6.35 |
6.36 |
0.76 |
10 to 12 |
2.29 |
4.83 |
5 to 8 |
+2.29-1.52 |
1.52 |
1.52 |
1.52 |
6.35 |
6.35 |
6.35 |
0.76 |
14 to 16 |
2.29 |
6.35 |
10 to 18 |
+4.06-3.05 |
3.05 |
2.29 |
2.29 |
6.35 |
9.65 |
6.35 |
1.52 |
18 to 24 |
3.05 |
9.65 |
20 to 24 |
+6.35-4.83 |
4.83 |
2.29 |
2.29 |
6.35 |
9.65 |
6.35 |
1.52 |
26 to 30 |
4.83 |
9.65 |
26 to 30 |
+6.35-4.83 |
4.83 |
3.05 |
4.83 |
9.65 |
- |
- |
- |
32 to 36 |
4.83 |
12.7 |
32 to 36 |
+6.35-4.83 |
4.83 |
4.83 |
4.83 |
9.65 |
- |
- |
- |
กก |
|
|
|
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