What are SRWN Flanges?

Hello FAIZOL82:

I have not found any reference to this acronym. What industry are you using these in? And can you check to see if the spelling is correct?

I think you should get in tough with the person who asked for this type of flange, and ask them for the DIN Specification, or AISI specification.

Say for instance,

"Dear Sir,

I would be grateful if you can send the specific AISI, or DIN specification on this type of fitting". I think whoever asked you for this may have miss spelt it.

Get back to me please..............

I have seen these flanges on the Deaerator few years back. when I was working in Lake Charles area Ammonia plant as a Process Engineer. I asked the mechanic and he explained to me and now I am having senior moment at this time. He explained to me the construction and operation and ease of maintenance and darn, I can not remember now and it is not Shrot Radius welding Neck as Mr. Galala said.

Regards;

Nadeem

11212008

Hello Nadeem0430:

Mr Galala did not say that.

He said he did not know, and then split the synonym into two, which is where the (possible) short radius, and welding neck.

Come back to us with the correct answer then will you, I want to find out firstly that you have found your memory. And, secondly, what these letters mean?

Take care...........

Babybear:

I do not want to dig myself deep in the unknown territory of my boggled up mind but what I remember was those were specially built in flanges with some special kind of gaskets to avoid the leaks and it is named after some person.

I called up my vessel engineer and being Friday, he is out for today and I will keep hunting for the info and will report back or until someone else comes up with the same answer that we all are after.

Regards;

Nadeem

11212008

Hello Nadeem0430:

I appreciate you posting me and look forward to the answer. As does the OP.

In piping abbreviations:

SR : means elbow with a short radius

WN : means flange with a welded neck

SRWN : ? (I didn't seen it before)

Hello Abdel Halim Galala:

I like your name Abdel..............How about and this is just a guess, because I cannot find it either, ..............short radius elbow with a welded flange neck?

Just a thought.

Hello babybear,

Thank you very much.

For that thread, I think that there is a mistake or a misunderstand by FAIZOL82 as you derived at your post #1.

Hello Abdel Halim Galala:

I think there has been a mistake. As I said to the OP get back to the client and ask for specific DIN or other spec'.

Thanks for the note. Still like your name

Dear Abdel Halim,

I will send attachment via your yahoo email.

Thank you.

Hello FAIZOL82:

Just to say, there is nothing wrong in saying you are going to email or PM someone. But, you first asked your question to the forum. Why not talk to the forum and let them know if there searches and, or personal knowledge sent in, trying to answer a difficult question, (and getting no feedback), has been in vain?

This one has got me. All that comes to mind is that it may be pertaining to a certain type gasket face or maybe just a mistake. Like FFWN (flat face weld neck) or RFWN (raised face weld neck) and SRWN means steel ring weld neck for the steel ring type gasket? I will ask around and see if I can figure it out but I am pretty sure it pertains to the gasket face type.

SRWN is self-reinforced WN...without reinforcing pad...could it be?

I have seen this before in fact..

I stopped jogging my memory (I found out to be useless- as I can not go any further-- LOL) and waiting for my vessel engineer and will go the deaerator folks to verify. That is where I had seen it.

Regards;

Nadeem

That the first time to hear that term "self-reinforced WN". The ASME Code nominates that type with "Integral Flange", i.e that type of flanges with its neck furnished with a special thickness to compensate for the reinforcing pad.

I can tell you that it is not so strange. I fully agree with the designation of the ASME COde as you indicate, but not everything is only as designated by the Code, but it has other ways of saying the smae thing. In any case, my experience is that, that sometimes SR stands for self-reinforced

Hello Januki:

I understand what you mean. But, certain codes are designed to allow people from around the world know what is being discussed. As in any computer code, though you cannot see it, the code must always be used in the same sequence and in the same way...........If not it is not a code.

Code, rule, whatever you want to call them, you have to stick to those rules. Otherwise, people on first reading about something new, cannot understand certain principles and how something works? You cannot go to a 'well it might be this meaning' site. What definitions would be on that site? NONE! Because you need codes of practices to be able to see the actual meaning of a sum, or the reason for design principles. You cannot look at a jumble of letters (in this case) and try and guess what is meant.

No insult implied OK?

Take care...........

Hi Baby bear...I do not consider an insult..hope!

Perhaps I have not explained quite well and clear, but what I am saying is that I have found this designation for this requirement SR= self-reinforcement..I agree with you that codes are indicated, but whta I am saying is when you work with many different standards, codes, specifications, cleints, manufacturers...sometimes you find different designations for the same thing..that is all!

In this case, I am not saying that it is what I am indicating for sure at all...what I am saying is that once I found it and finally it was that, self-reinforced...it is not trying to guess something!

Sorry...last comment I was not log in..

Only as an additional reference, it seems I am not the only one that agrees that SR is self reinforced..please go to the thread

http://cr4.globalspec.com/thread/16200/Self-reinforced-nozzles-made-out-of-plates

We had a unique situation, where-in one of our vendor opted to fabricate Self reinforced (SR) nozzle necks (for pressure vessels) made out of plate rolled nozzles !!!!, instead of forgings...

Hope this clarify this matter to everybody, not so strange I have to say

Hello Guest,

Thank you for the reply. Which shows you care! Why do you not join, there is alway a place for people who post. Rather than asking a question, taking the answer then disappearing, you know? I am talking of others not you OK?

These acronyms get stuck on lists of anything and everything at a local level (very often). I know because I had to make an inventory of a local DIY warehouse. And made up acronyms where needed to shorten the item so it would fit on a label? And these can sometimes be read as the 'type code', when in fact, it is a little old Joe like me trying to fit 20,000 items on a list?

Often people ask a question and just do not get back to the site, That is frustrating. I try to help but, in this case the OP sent in 1 message which said he would email a poster direct. Nothing about the previous 12 or so posts trying to help him. That is just rude. Sorry for the rant, OK.

I am glad you did not take my post as an insult, it wasn't. But also glad you reposted. Thank you.

Take care................

The only type of WN flanges that are made are RFWN(raised face weld neck) Large male-female weld neck, large tongue and groove weld neck, small tongue and groove weld neck, flat face weld neck ( FFWN), lapped joint weld neck, (LJWN) small male-female weld neck and ring joint weld neck(RJWN) The male-female and tongue and groove probably have abbreviations as well but I am not very familiar with these. There are of course many types of custom flanges made but I am thinking that the SRWN is a mistake or typo. If anyone figures this one out I would like to know myself.

I actually think I may have found one of these "self reinforced" flanges this week in the paper mill I work at. I was inspecting an ancient 850lb. superheated steam line trying to determine if it was P-11 or P-22 type material to spec. out for a contractor. One of the 8" branch connections are made in a way I have never seen before. It looks like a forged or machines nozzle and is allot thicker near the welded end. I also replace another strange type branch connection recently that I have never seen one like. It was like a 8" socket weld fitting as in it had a saddle formed for the header and the branch actually slid into the other end and had a very large fillet weld. This particular piece had cracked so part of my job was to have it replaced with a conventional weld-o-let and then a butt weld nozzle. Maybe the SRWN combines the weld-o let and the flange in one piece like the other poster is talking about?

Hello pipewelder:

as far as I can see the OP never came back and left any info on that.

But the one you found sound unusual! It it made in situ? And can you see a company name anywhere?

Take care.............

http://www.offshore-technology.com/contractors/pipes/amiga/

More references for self-reinfoced nozzles....definetly, I think that with SRWN they are requiring without any doubt WN without pad..check it

Hello Januki:

Just went to the link and it looks like you have cracked it and a picture as well! Mind you this looks like a thread run by the 'searchers' now. As we have had no further details from the OP. Personally, I think that is rude. But that's just me and my morals and ways of doing things.

Well done.

Have given a GA for the almost full description as asked for by the OP. I know others have answered but, a pic as well this time.

Sort of sorry this is going to end now. Not exactly easy to find the details though, was it?

Take care................

Please update this:

SRWN - Definition by AcronymFinder