Tolerance of Flanges

Description

DIMENSIONS TOLERANCES OF FLANGES (in mm)
Welding neck

* outside diameter O.D. 600 if smaller
+ 1.6
_
O.D. over 600
+ 3.1
_
250 and smaller
+ 0.7
_
inside diameter 12 though 450
+ 1.6
_
(bore) 500 and larger
+ 3.1
– 1.6
1.6 raised face
+ 0.4
_
diameter of 6.3 raised face tounge &
contact face groove male and female
+ 0.4
_
* diameter of hub When E is 600
or smaller
+ 1.6
_
at base When E is over 600
+ 3.1
_
* diameter of hub 125 and smaller
+ 2.2
– 0.7
at point of weding 150 and larger
+ 4.0
– 0.7
Thickness 450 and smaller
+ 3.1
– 0.0
500 and larger
+ 4.7
– 0.0
length through 250 and smaller
+ 1.6
_
hub 300 and larger
+ 3.1
_
bolt circle 600 and smaller
+ 0.7
_
600 and larger
+ 1.6
_
drilling bolt hole spacing
+ 0.7
_
eccenticity with respect
to bore 0.70 max
Threaded, Slip on lap joint,
Socket welding and blind
* outside diameter O.D. 600 or smaller
+ 1.6
_
O.D. over 600
+ 3.1
_
inside diameter threaded : to stand gauge limit
(bore) slop on .lap joint : socket-welding
250 and smaller
+ 0.7
– 0.0
300 and larger
+ 1.6
– 0.0
threaded
diameter of 250 and smaller
+ 0.7
– 0.0
counter bore 300 and larger
+ 1.6
– 0.0
* outside diameter 300 and smaller
+ 2.3
– 1.6
of hub 350 and larger
+ 3.1
_
diameter of 1.6 raised face
+ 0.7
_
contact face 6.3 raised fact tongue & grooved
male & female
+ 0.4
_
Thickness 450 and smaller
+ 3.1
– 0.0
hub 500 and larger
+ 4.7
– 0.0
* length through 450 and smaller
+ 3.0
– 1.6
hub 500 and larger
+ 4.8
– 1.6
bolt circle
+ 1.6
_
drilling bolt hole spacing
+ 0.7
_
eccenticity with respect
to bore 0.70 max
H Not covered by ANSI – B 16.5

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