i have a question aboult bolt length in 2013
Case as below:
Catalogin pipe and fittings
when we place flang connection component and notice that:
the actual bolt length is smaller than the default
NS default length actual length
50 87 85
100 95 90
125 99 95
150 112 100
in my opinion, for those flange connection components ,the bolt length is read from the catalog dirrectly(map from the map table and get the equal or longger value)
and fro those WF components,it should caculate the length and get the catual length from the map table.
Can you send me a screenshot of one of your measurement. I don't see any issues while inserting a flange from 10HS01 and measuring its length.
Looking forward to your additional information.
I could able to reproduce the same behavior in 2012 and on most of the spec. I am working with our developers to find the design intent behind this issue. I will keep you posted.
For bolt length calculation we check the FlangeThickness values defined at flange and bolt set.
If both are equal (or one is not set) and it’s no wafer component we use the bolt length defined inside bolt set
But if both are different we subtract the bolt set FlangeThickness from bolt set bolt length, add the flange FlangeThickness.
Now look for the next possible bolt ‘standard’ length (if define – if not we round up to next 10)
If we look now into 10HS01 spec we see that the DN 50 flange has as defined FlangeThickness a length of 18.0 mm
Now let us have a look now into the bolt set definition. We see that there is FlangeThickness defined with 20.00 mm and an overall length 87.0 mm
We see that the bolt set and flange FlangeThickness are different so we have to recalculate (booth used flanges are equal)
87.0 – 20.0 – 20.0 + 18.0 + 18.0 = 83.0
So we get a new calculated bolt length 83.0 mm … the next possible ‘standard’ bolt length would be 85.0
This definitions and recalculations give us the possibility for easier use of different flange sheet thickness with the same base definition PressureClass, NominalDiameter, EndType, Facing for bolt set selection – that is otherwise problematic if we connect an orifice flange with a welded flange … the orifice flange normally has a larger flange sheet for the instrument connections but the same base definitions so we would always get the same bolt length defined in bolt set.
So we have only 1 bolt set for the base properties with 1 standard FlangeThickness we used for base length and recalculate it if necessary.
if look like for
We hope this short overview help to understand the different bolt length values