AutoCAD Plant 3D General DIscussion

AutoCAD Plant 3D General DIscussion

Active Contributor
Posts: 41
Registered: ‎08-02-2007
Message 1 of 3 (466 Views)

Pipe and Slip on Flange Dimension incorrect in ISO

466 Views, 2 Replies
09-18-2012 11:17 PM

Hi There,


I wonder if anyone can help me. I am pulling an ISO of a pipe which contains a slip on flange. The end types for the flange are: 1. FL and 2. SO. When I pull the ISO it should show a dimension of 600 including the flange width. The pipe was created with a length of 600. But when I add the flange to the pipe it adds the additional 14 (Flange thickness). Therefore my dimension in my ISO is 614 instead of 600. Is there a way to change this so that the flange sits over the pipe instead of infront of it? I tried changing the engagment length in the catalog editor. It put the flange 14mm infront of the pipe, but no matter what sizes I changed it to I could never get the flange to sit on the pipe.


Kind regards,


Valued Contributor
Posts: 64
Registered: ‎02-22-2011
Message 2 of 3 (384 Views)

Re: Pipe and Slip on Flange Dimension incorrect in ISO

09-26-2012 03:51 AM in reply to: tarrynd

As I understand correct, You need do have one point on a slipon flange, that contains two attachment point, one for a pipe (SO) and one for a flange (FL), as You wrote,

When we look at B16.5, please, You can find that this two points are slightly different, not the same.

When You change a component in catalog, reload again in pipespec, then test it.
I saw in catalog that they have a little difference from L and I values.
You must also check "way of dimension" for ISO template form. I suppose that You can check length of pipes in cut piece list, is it correct or wrong.

@end, this is interested problem, because on a big flanges this difference can be big.
e.g For 16" SO Flange L-I 2.5"-2.34"=0.16" (>4 mm), then if you have 10, or 20 flanges on a line , it goes > 8 cm

Posts: 15
Registered: ‎10-24-2011
Message 3 of 3 (54 Views)

Re: Pipe and Slip on Flange Dimension incorrect in ISO

07-07-2014 02:02 AM in reply to: tarrynd

Is there a good solution for it?


Same problem here.

If you have a slip-on flange the pipe should not run until the flange "end-plane". It should be cut back with at least the wall-thickness (X), to have enough room for the welding inside the flange.



Engagement length does not do any good. 

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