Re: Pipe wall thickness

Hello,
By the way, if you have thermal conditions on some lines (i.e. sever cyclic conditions or flange forces/moments)which may be affected by change in the pipe wall thickness, it is better to recheck your thermal stress design with new thisness in those lines.

Regards,
A. Bohlool
--- In PipingDesign@yahoogroups.com, "phenol19" <halvi@...> wrote:
>
> Hello.
>
> I want to ask a question about pipe wall thickness. Actualy we
need a
> pipe with following details " Size : 34" , API 5L - B SAW BE ASME-
> B36.10M 11.0mm-T " while vendor is offering pipe with 12.5 mm
> thickness. On clarification from vendor, he respond that " The
11,0
> mm thickness is not standard. Therefore the delivery time will be
24
> weeks. Since 12,5 mm is a standard size, this is availleble from
> stock ". I Just want to confirm that if i replace pipe thickness
> with 12.5mm, will there any prblem on the welding time. I mean if
i
> want to weld an elbow of 11mm thickness ( because vendor is
offering
> elbow of 11mm thikness as per our requirement) and a pipe of
12.5mm
> thickness, there must be a problem of matching thickness. again if
we
> weld a pipe of 12.5mm thikness with a WN flange of 11mm thickness,
> again same problem of matching size. Also my frend told me that
there
> is a tolerance allowance of 1mm in welding. ( i am not sure about
it )
>
> So please suggest me that there is no issue if we accept pipe with
> wall thinkess of 12.5mm. ofcourse its a better choice w.r.t
pressure
> bearing property.
>
> Regards.
>
Received on Tue Feb 26 08:38:00 2008