DIMENSIONAL TOLERANCES OF FITTINGS (In mm)
(ANSI B 16.9, B 16.28)      
All Fittings 900and 450
Elbows
Tees Reducers Caps 1800 Returns Angularity Tolerance
Nominal
Pipe
Size
Outside
Diameter
at Bevel
OD
Inside
Diameter
at End
T
Wall
Thickness
T
Center
to-End
Dimenson
A.B
Center
to-End
Dimenson
C.M
Overall
Length
H
Overall
Length
E
Center
to-End
Dimenson
P
Back
to-Face
Dimenson
K
Alignment
of Ends
U
Nominal
Pipe
Size
Off
Angle
Q
Off
Plane
P
1/2-2/1/2
+ 1.5
- 0.7
+ 0.7
_
Not less
than
87.5%
of
nominal
thickness
+ 1.5
_
+ 1.5
_
+ 1.5
_
+ 3.0
_
+ 6.3
_
+ 6.3
_
+ 0.7
_
1/2-4 0.7 1.5
03-04
+ 1.5
+ 1.5
_
5-8 1.5 3.0
05-08
+ 2.2
- 1.5
+ 6.3
_
10-12 2.2 4.8
10-18
+ 4.0
- 3.0
+ 3.0
_
+ 2.2
_
+ 2.2
_
+ 2.2
_
+ 9.6
_
+ 0.7
_
14-16 6.3
20-24
+ 6.3
- 4.8
+ 4.8
_
   
+ 4.8
_
+ 9.6
_
      18-24 3.0 9.6
26-30
+ 3.0
_
+ 3.0
_
26-30 4.8
32-48
+ 4.8
_
+ 4.8
_
32-42 12.7
      44-48 19.0