Why small bore piping is Socket welded?
jagadis...@gmail.com
can i butt weld smallbore piping?
reson is bore geting ruduce OR less thichness?
regards,
Jagdish
Fitria Rahman
below is my view;
the socket weld are easier to be installed.
yes, you can use a butt weld for small bore piping. This has been proven successfully in our project.
Lastly, some disadvantage such as overstress, fatigue and others disadvantage most likely happens in SW. Other thing also is BW strength is better than FW.
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Moscarda, Kim K
G’day Jagdish, I would not recommend socket weld piping if it is in a vibrating environment eg. Reciprocating compressors. Butt welds are much stronger.
If you do go with socket weld, make sure they leave a small gap at the end of the pipe when they insert it. If the socket is installed flush then you will introduce residual stress when you weld i.e. heat expansion.
Cheers
Kim
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Suresh
SW using for piping when small bore and low heat input needed .if you
for BW in small bore ,heat input may not be resisted for lower wall
thickness ....
best of my knowlwedge I would recommended strongly using SW for small
bore unless vibratory or critical services .. we should mantained 2 or
3 mm gap when we are instering the pipe ...for heat expansion or
contraction purpose....
AS per ASME 31.3 for SW joints min 2 passes required ...
Thank you
Suresh
On 3/4/11, Moscarda, Kim K <Kim.K.M...@bhpbilliton.com> wrote:
> G'day Jagdish, I would not recommend socket weld piping if it is in a
> vibrating environment eg. Reciprocating compressors. Butt welds are much
> stronger.
>
> If you do go with socket weld, make sure they leave a small gap at the end
> of the pipe when they insert it. If the socket is installed flush then you
> will introduce residual stress when you weld i.e. heat expansion.
>
> Cheers
>
> Kim
>
> From: material...@googlegroups.com
> [mailto:material...@googlegroups.com] On Behalf Of Fitria Rahman
> Sent: Friday, 4 March 2011 9:57 AM
> To: material...@googlegroups.com
> Subject: Re: [MW:10122] Why small bore piping is Socket welded?
>
> Hi Jagdish
>
> below is my view;
> the socket weld are easier to be installed.
> yes, you can use a butt weld for small bore piping. This has been proven
> successfully in our project.
> Lastly, some disadvantage such as overstress, fatigue and others
> disadvantage most likely happens in SW. Other thing also is BW strength is
> better than FW.
>
> 2011/3/2 jagadis...@gmail.com<mailto:jagadis...@gmail.com>
> <jagadis...@gmail.com<mailto:jagadis...@gmail.com>>
> Why small bore piping is socket welded?
> can i butt weld smallbore piping?
> reson is bore geting ruduce OR less thichness?
>
> regards,
> Jagdish
>
> --
> To post to this group, send email to
> material...@googlegroups.com<mailto:material...@googlegroups.com>
> To unsubscribe from this group, send email to
> materials-weld...@googlegroups.com<mailto:materials-welding%2Bunsu...@googlegroups.com>
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Thanks & Best Regards,
Suresh
Mobile No: 91-92 92 905 905
samshuddin k
in small dia pipe,root welding is very difficult and skilled welder is
required,and also if root is not uniform it will obstruct the flow
regards
Samshuddin.K
Yogesh kumar
dear sir,
We too have successfully implemented butt-welding in small bore piping up-to 1/2", of-course it's high pressure piping.
Just get the PQR done and develop WPS as per SecIX,
Recently,while a modification job ,problems of excess penetration came while often while welding small bore joints,so welder should be qualified for SBR before taking up the job.
regards.
chrisga...@keppelseghers.com.sg
Dear Yogesh Kumar,
Please clarify what is SBR.
Thanks & Regards,
Chris Ganesan.GP
Q.C Inspector
DSWMC Project Qatar
Keppel Seghers Engineering Company
2nd Floor, Business Building
Al Handasa Street,
B-Ring Road, Near Jaidah Flyover
P.O Box 37069
Doha, Qatar.
Tel . +974 44907419 ( Ext 2190 )
Fax . +974 44907978
Mobile . +974 66013902
E-mail . chrisga...@keppelseghers.com.sg
| Yogesh kumar <yogesh...@gmail.com> Sent by: material...@googlegroups.com 03/04/2011 09:05 PM
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