Wednesday, December 9, 2009

Re: [MW:3810] Welding of P5A & P5B Material

Refer to ASME B31.1 page 83 and 84 for preheating and post heating requirement for P5A and P5B. Generally, the minimum thickness for preheating & post heating for P5A material is above 13mm and for P5B material is above 10mm. Heating temperature for P5B material is 740 ~ 780 deg C and for P5A material is 680 ~ 720 deg C. Heating time varies with the thickness of the material. P5B material & P5A material requires argon backing.

For the welding of SA 335 Gr. P91 (PNo-5B, Group No-2) Material………
1)      What is the Preheating Temperature?
2)      What is the Post heating Temperature & Time ?
3)      PWHT is require or not ?
4)      While welding (GTAW) Backing is require if yes, then Argon is OK ?

For the welding of SA 335 Gr. P22 (PNo-5A, Group No-1) Material………
1)      What is the Preheating Temperature?
2)      What is the Post heating Temperature & Time ?
3)      PWHT is require or not ?
4)      While welding (GTAW) Backing is require if yes, then Argon is OK ?

On Wed, Dec 9, 2009 at 3:43 PM, KC <kc.chavda07@gmail.com> wrote:
Can any body inform about the …..

For the welding of SA 335 Gr. P91 (PNo-5B, Group No-2) Material………
1)      What is the Preheating Temperature?
2)      What is the Post heating Temperature & Time ?
3)      PWHT is require or not ?
4)      While welding (GTAW) Backing is require if yes, then Argon is OK ?

For the welding of SA 335 Gr. P22 (PNo-5A, Group No-1) Material………
1)      What is the Preheating Temperature?
2)      What is the Post heating Temperature & Time ?
3)      PWHT is require or not ?
4)      While welding (GTAW) Backing is require if yes, then Argon is OK ?

--
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 originated from the Internet. Its originator may or may not be who they claim to be and the information contained in the message and any attachments may or may not be accurate.

This email transmission is intended solely for the named recipient(s). It may contain confidential and/or privileged information.If you are not the intended recipient, note that disclosing, copying or distributing it may be unlawful. Please notify the sender immediately if you have received it by mistake, and delete it from your system.
Internet communications cannot be guaranteed to be timely, secure, error or virus-free. The sender does not accept liability for any errors or omissions.

"SAVE PAPER - THINK BEFORE YOU PRINT!"

Regards,

~ DEVARAJAN RAMASAMY~

--
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.

No comments:

[MW:34820] RE: 34813] Clarification in Rate of heating and cooling.

Hello,   Please see the response below.   Regards.   P. Goswami, P. Eng, IWE.   From: materials-welding@googlegroups.com <materials-weld...