Re: [PipingDesign] Comparing buttweld and socketweld joints

From: <Gang>
Date: Mon Jul 25 2005 - 03:18:00 EDT

Dear friends,
But weld joints are definitely superior to SW ones. In small-bore lines, it is pretty easier to execute SW joints. Hence it is preferred wherever feasible. It applies to low-pressure setups.
When it comes to high pressure, even for small-bore lines, (be it even 1/2 inch NPS), certain pipe specifications for specific applications call for butt-welded joints only. This is so, generally, for class 900, 1500 and 2500 lbs classes. Root passes are executed with TIG so that the bore remains uninterrupted. Joints are subjected to radiography also, with a suitably positioned oblique source. The main objection for certain fluids is from the crevice point of view. It initiates the so-called crevice corrosion in sockets.
Cheers!
C. V. Gangadharan.

>
> Hi all,
>
> Has anybody seen any reference about comparing
> between socket weld and
> butt-weld joints?
> Which one is more safe in high pressure services?
> and what is the reason to
> select each of them?
> And also which one has more strength ?
>
> Tx,
> Mahnoush
>
>
>
>
>
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Start your day with Yahoo! - make it your home page http://www.yahoo.com/r/hs Received on Mon Jul 25 03:18:00 2005

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