Plastic pipe and fitting according to DIN 8062 / 8063 size confusion 1

[ali1000]

Good day,
I have confusion when expressing piping or fittings accroding to DIN 8062/DIN 8063 ,
The confusion is about norminal sizes again Outside diamters . Standard does not specify the nominal size but only nominal outside diamter. but suppliers does not follow the same approach about Nominal size and outside diamter , some of them specify that nominal size is equal to outside diamter ex: DN40 -> OD=40 mm and some others provide a different correspandance table ex: DN 40 -> OD = 50 mm .
This make to me confusion and many probleme may accure during material purchase .
do you have any ideas about how to preceed?

 

[LittleInch]

You just need to be precise about what YOU mean if there is confusion.

In my experience PE pipe should always be referred to by its OD, with this being the same as it's nominal diameter - which is what I think you say the standard does.

Unfortunately because a lot of people more used to steel pipe quote Nom Diam which isn't the same as the OD.

So in your data sheet / PO whatever just be clear that you call id 2500m metres of PE pipe to DIN XXXX, 150mm OD or whatever and forget the ND thing if the standard doesn't use it.



Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[ali1000]

Thank you LittleInch,
DIN8062/8063 is for PVC piping , but I think the same issue is for HDPE.
In fact, the confusion is that somtime suppliers does not consider Outside diamter but they use Nominal diameter for pipe and fittings.
but yes I think that the better solution is to highlight the OD on material list and forget ND.

 

[mk3223]

It's true that, instead of relaying on words, the Designer should alway confirm the actual dimensions of the connecting parts to be matched, especially between two different material which fabricated per different Codes.