Re: [MW:4257] WPS

Hi,

Mainly for Carbon steel Pipe-Flange WPS qualification is due to Changes in Group no.

For A105 material P No1Gr2,A106GrB P No1 Gr no1.As per Sec ix Changes in Group no Supplementary variable.

 

If we qualify pipe-pipe,again we have to qualify for pipe-flange.In order to avoid many WPS qualification,pipe-flange wps qualifion prefered.

 

I hope that your doubt is clear.If any further clarification do not hesistate to contact me.

 

On Mon, Feb 8, 2010 at 11:17 PM, narasimha murthy <jnm71269@gmail.com> wrote:

Hi,

As most of the fittings (flanges) used are forged, and since hardness is one of the important factor to be considered during welding, and there are chances that hardness on the heat effected zone of the fittings may be higher than the required values. Hence inorder to monitor the hardness values and ensure that welding procedure qualification qualifies for the fittings Too, It is prefered to weld a welding procedure qualification between pipe to flange. 

Regards

 

J.N.Murthy

Doha

On Mon, Feb 8, 2010 at 9:34 AM, krishna <wiqw@rediffmail.com> wrote:

Hi all,
              Could one clarify the reason behind using pipe to flange for qualifcation of a welding procedure.
Why pipe to pipe is not used?

thanx
wi

--
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.

--
With Warm regards,

G.Padmanabhan
+96895685853

--
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.