DIN EN ISO 6708 PDF

Standard DIN EN ISO Pipework components – Definition and selection of DN (nominal size) (ISO ); German version EN ISO. DIN EN ISO Pipework components – Definition and selection of DN ( nominal size) (ISO ); German version EN ISO Title ( German). DIN references following documents: DIN EN ISO , , Pipework components – Definition and selection of DN (nominal size) (ISO.

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I am only familiar fin the DIN Standard as it pertains to drafting and basic design fits and the like. Perhaps not as in-depth as you would like but you will get some information. My experience with both standards, however, would lead me to beleave that you will not find a cross-reference type of book. The standars cover pretty much the same material but since ANSI uses Imperial numbers and DIN uses metric you will not find a direct equivalent between eb.

But the 67708 important factor to consider at the moment is that there is a ‘Common Approach’ being developed across Europe. The idea of this common approach is to harmonize standards across the community to reduce barriers to trade between member states.

The developments of this is that a number of national standards relating to Pressure Vessels including ‘pipework’, ‘safety accessories’ and ‘pressure accessories’ are being harmonized as we speak type, garble, cackle, etc. We have recently received the new standard that replaces British metric flanges, I haven’t had time to read this yet but I fully expect it to supercede both BS and DIN specifications.

I would suggest that you look at the Common Approach website, a link for this can be found in the CEN forum. Hope this is of some help. The new codes would be a callobration between all the different codes and standards body.

However, if your company isl continually going to be working with both regulations, it may be useful to invest the money to buy both standards, and use the code revelant to the country where the equipment don going. Hope this provides you some insight. As I mentioned earlier, standards across Europe are changing. To the best of my knowledge these are also to become the ISO standard mentioned above.

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The new Isoo flanges are based on the DIN flanges but there are some changes to the height of the raised face so be careful when using them. Have a look here http: For flanges checkout ISO Both are preliminary but jso due to be released in final versions this summer I’m told. As they seem to have been rushed through as discussed by Fawkes in the CEN forum there are probably still many errors. Furthermore DIN have several dimensions for each combination of valve type, size and rating whereas ASME normally have only one or two.

For materials checkout all the threads in the Materials engineering forum with links to web sites.

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There are don of comparison tables around with suitable substitutions, but no exact cross reference list, as there are typically small variations in chemical composition from ASME to DIN. Fawkes I had never heard of EN so I looked it up at www. Can you tell more about this?

Mogens, I was entering the details from memory and as usual its pretty patchy, try EN or other 608. From this point the EN standards are mandatory and so is AD I think this is what they’re calling it. If you have trouble with the specification i’ve entered try the listing on the new approach website: Get a copy, look at the drawing for a raised face flange, the dimesions aren’t labelled!!

Preferred metric sizes

You have to backtrack through the specification to find the correct columns in the tables. One good aspect of this standard is that ASME materials are acceptable, and as the standard identifies which elements of the essential safety requirements are covered this means that particular material apopraisals for flanges to this standard in ASME materials are not necessary.

Now here’s a good idea, after posting the URL above I decided it might be nice to go and get the names so here they are: EN Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN designated EN Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, Class-designated EN Flanges and their joints – Design rules for gasketed circular flange connections Hope this helps.

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On the new approach web site EN is a proposed document, this isn’t the case in the UK, the standard has replaced all others. Fawkes Thanks Good website about the new approach by the way Only I’m getting more and more confused now about which standards to follow. I thought that the ISO standards were established to make uniform worldwide standards.

Whenever possible I expected that EN standards covering the same topic would be adopted with the same name, like fex. This means perhaps that I can throw out ISOsince it is not in the new approach? Sorry Hedge for the thread turning slightly out of direction. Mogens, Don’t throw anything away.

Read all the specifications carefully, there is probably a lot of common ground and many suppliers provide flanges with dn certification and will stamp as required.

The biggest problem with all of this is 7608 battle that appears to loom in the background between the USA and Central Europe. The Americans think that they control all and everything, Central Europe its fighting tooth and nail to prove this isn’t so.

I know I’ve just upset one person on the site with such a comment but its about time national boundaries and zenaphobic egos were put to one side and we got on with decent engineering.

Mogens, and everybody else, Here is the introduction from EN Consequently, whilst the mating dimensions, the flange and facing types and designations are compatible with those given in ISOit is important to take account of the following differences which exist in EN I can see now that I do need the new EN standards, in order to ensure ratings are compatible with those.

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NPS vs DN Diameter- Valvias

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