On 3/4/11, Yogesh kumar <yogeshandpini@gmail.com> wrote:
> 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.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> On Fri, Mar 4, 2011 at 12:54 PM, samshuddin k <sam.renja@gmail.com> wrote:
>
>> Dear all
>> 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
>>
>>
>> On Fri, Mar 4, 2011 at 12:20 PM, Suresh <bobsuresh24@gmail.com> wrote:
>> > Hii Good day to all,
>> >
>> > 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.Moscarda@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: materials-welding@googlegroups.com
>> >> [mailto:materials-welding@googlegroups.com] On Behalf Of Fitria Rahman
>> >> Sent: Friday, 4 March 2011 9:57 AM
>> >> To: materials-welding@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 jagadish.dodiya@gmail.com<mailto:jagadish.dodiya@gmail.com>
>> >> <jagadish.dodiya@gmail.com<mailto:jagadish.dodiya@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
>> >> materials-welding@googlegroups.com<mailto:
>> materials-welding@googlegroups.com>
>> >> To unsubscribe from this group, send email to
>> >> materials-welding+unsubscribe@googlegroups.com<mailto:
>> materials-welding%2Bunsubscribe@googlegroups.com>
>> >> For more options, visit this group's bolg at
>> >> http://materials-welding.blogspot.com/
>> >> The views expressed/exchnaged in this group are members personel views
>> and
>> >> meant for educational purposes only, Users must take their own
>> >> decisions
>> >> w.r.t. applicable code/standard/contract documents.
>> >>
>> >> --
>> >> To post to this group, send email to
>> >> materials-welding@googlegroups.com
>> >> To unsubscribe from this group, send email to
>> >> materials-welding+unsubscribe@googlegroups.com
>> >> For more options, visit this group's bolg at
>> >> http://materials-welding.blogspot.com/
>> >> The views expressed/exchnaged in this group are members personel views
>> and
>> >> meant for educational purposes only, Users must take their own
>> >> decisions
>> >> w.r.t. applicable code/standard/contract documents.
>> >>
>> >> ________________________________
>> >> This message and any attached files may contain information that is
>> >> confidential and/or subject of legal privilege intended only for use
>> >> by
>> the
>> >> intended recipient. If you are not the intended recipient or the
>> >> person
>> >> responsible for delivering the message to the intended recipient, be
>> advised
>> >> that you have received this message in error and that any
>> >> dissemination,
>> >> copying or use of this message or attachment is strictly forbidden, as
>> is
>> >> the disclosure of the information therein. If you have received this
>> message
>> >> in error please notify the sender immediately and delete the message.
>> >>
>> >> --
>> >> To post to this group, send email to
>> >> materials-welding@googlegroups.com
>> >> To unsubscribe from this group, send email to
>> >> materials-welding+unsubscribe@googlegroups.com
>> >> For more options, visit this group's bolg at
>> >> http://materials-welding.blogspot.com/
>> >> The views expressed/exchnaged in this group are members personel views
>> and
>> >> meant for educational purposes only, Users must take their own
>> >> decisions
>> >> w.r.t. applicable code/standard/contract documents.
>> >>
>> >
>> >
>> > --
>> > Thanks & Best Regards,
>> >
>> > Suresh
>> >
>> > Mobile No: 91-92 92 905 905
>> >
>> > --
>> > To post to this group, send email to materials-welding@googlegroups.com
>> > To unsubscribe from this group, send email to
>> materials-welding+unsubscribe@googlegroups.com
>> > For more options, visit this group's bolg at
>> http://materials-welding.blogspot.com/
>> > The views expressed/exchnaged in this group are members personel views
>> and meant for educational purposes only, Users must take their own
>> decisions
>> w.r.t. applicable code/standard/contract documents.
>> >
>>
>> --
>> To post to this group, send email to materials-welding@googlegroups.com
>> To unsubscribe from this group, send email to
>> materials-welding+unsubscribe@googlegroups.com
>> For more options, visit this group's bolg at
>> http://materials-welding.blogspot.com/
>> The views expressed/exchnaged in this group are members personel views
>> and
>> meant for educational purposes only, Users must take their own decisions
>> w.r.t. applicable code/standard/contract documents.
>>
>
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
Comments