Weldolet branch connection looks so strange... (photo)
Weldolet branch connection looks so strange... (photo)
(OP)
Hi all,
Could this be right (see photo attached)??
Generally speaking, which standard specifies how the weldolet branch connections shall be fitted? I mean when it's set it, set on etc. and what's the proper orientation (meaning which side goes onto run pipe)?
Thanks in advance for all kinds of feedback
JT
Could this be right (see photo attached)??
Generally speaking, which standard specifies how the weldolet branch connections shall be fitted? I mean when it's set it, set on etc. and what's the proper orientation (meaning which side goes onto run pipe)?
Thanks in advance for all kinds of feedback
JT





RE: Weldolet branch connection looks so strange... (photo)
Are there any markings left on the o'let? That's a clue to which end should be set on the run pipe.
RE: Weldolet branch connection looks so strange... (photo)
No idea why the welding looks so terrible- there's no scale to indicate how big this thing is...
It is possible that the o-let was set on with an excessive root gap between the end of the bevel of the o-let and the OD of the pipe. No idea why that would have been done.
RE: Weldolet branch connection looks so strange... (photo)
RE: Weldolet branch connection looks so strange... (photo)
That thing looks more like a buttweld pipet, see http://www.bonneyforge.com/resources/20140331WFIPr...
Looks horrible but might be OK if it's welded to the weld line.
The branch connection should be flat and the connection to the pipe contoured to match the OD of the pipe ( within certain ranges, e.g. 8" to 12" might be the same fitting)
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Weldolet branch connection looks so strange... (photo)
RE: Weldolet branch connection looks so strange... (photo)
E
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Weldolet branch connection looks so strange... (photo)
Compare the configuration of a 2" set-on weldolet configuration for a 4" NPS pipe versus one for a 20" pipe.
The weldolet in the picture is not the right size for the run pipe ...
Plus, the welder is an idiot ....
MJCronin
Sr. Process Engineer
RE: Weldolet branch connection looks so strange... (photo)
Before it becomes a projectile attached to one end of a pipe.
RE: Weldolet branch connection looks so strange... (photo)
QCJT- We could do with some feedback ourselves on the posts and information provided and what the outcome is.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Weldolet branch connection looks so strange... (photo)
Thank you all for practical tips and good answers (with sense of humor too). It's a pity that I can't update you on this matter, since nobody took any action on this piece and it seems it will stay as it is on the pipe, which is now on its way from pre-fab shop to the erection yard. I will advise our construction of course, based on your tips and will let you know what decision was finally taken!
Thank you very much.
JT
RE: Weldolet branch connection looks so strange... (photo)
RE: Weldolet branch connection looks so strange... (photo)
It hasn't been hydrotested yet and I do not think that the hydrotest will be a problem.
Best regards,
JT
RE: Weldolet branch connection looks so strange... (photo)
Looking at this again, whilst there might be a manufacturers weld line hidden below the top line of the weld, the concave nature of the weld is not permitted. This should be straight down as per the drawing in B 31.3. Otherwise you don't have enough metal for the area replacement design.
I don't think we've ever understood the branch and header sizes involved here, the wall thickness, the pressures, the contents or the design code (b31.3?) Also what is the branch? Does it have high vibration or stresses?
It still think that in the diagram below you are in the incomplete welding. Then compare your picture with the completed on below - compare and contrast.... If you saw an incomplete butt weld as shown on the diagram would you just let it go as well??
Does it need a lot of welding - yes it does.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Weldolet branch connection looks so strange... (photo)
Thank you for the post. Good one! However in our case I think the weldolet was installed upside down and without the due machining. My recommendation was to redo it and I'm trying to get the info now as to what has actually happenned...
JT
RE: Weldolet branch connection looks so strange... (photo)
Meaning that nobody noticed the curvature on one end of the 'olet? Or that maybe it's actually a 'Flat-o-let'?
RE: Weldolet branch connection looks so strange... (photo)
There have been a lot of "opinions" thrown out there but you know the old story - opinions are like ass.....!
You have an "integrally reinforced fitting" ( As per B31.3) and the only requirement is the material and weld metal thicknesses meet codes requirements and the weld is complete penetration.
Prior to posting this question did you actually look inside to check the root penetration or lack of ?
If the root is completely fused and there is sufficient weld metal (as per code requirements) - who cares if it is an ugly fitting made from recycled baked bean cans cast in a foundry somewhere in the upper Himalayas (sorry, always wanted to slip that one in)
Cheers,
DD
RE: Weldolet branch connection looks so strange... (photo)
This was picked up upon periodic visit to the shop and now it has been welded in proper way (see photo)
Thank you guys for the feedback
RE: Weldolet branch connection looks so strange... (photo)
LI
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Weldolet branch connection looks so strange... (photo)
RE: Weldolet branch connection looks so strange... (photo)
Your original post questioned the correctness of the orientation of the fitting and then later you mentioned it was installed upside down.
Then it was supposedly removed, installed correctly and rewelded ?
Unless there is something wrong with my eyes both photos show the fitting installed the same way - the first shows the weld is incomplete and the second shows the weld completed ?
Cheers,
DD
RE: Weldolet branch connection looks so strange... (photo)
RE: Weldolet branch connection looks so strange... (photo)
Agree?
RE: Weldolet branch connection looks so strange... (photo)
The final photo does not appear to have a radius at the weld to main juncture as is indicated in the sketch posted by Littleinch. So there is still a stress raiser at this junction. Hopefully there is no significant cyclic loading. Once seen a 6"nb weldolet on a 12"nb line completely snapped off due to a combination of circumstances, all because of a stress raiser.
RE: Weldolet branch connection looks so strange... (photo)