RE: [MW:24372] RE: 24361] Flange Buttering

There is no code for the same,

However as suggested by some of our friends, same WPS can be used for 1 or 2 layer deposition.

And regarding heat treatment – it depends on the MOC, flange size, thickness, deposited weld thickness, and any more heat treatment done during manufacturing etc has to be reviewed,

And finally – convince client once again  - that it is some tolerance matter and pipe ovality issue and not the flange concern.

If the pressure ratings are of nominal, than no need of all these manipulation, you can directly weld it.

 

Thanks & Regards,

Lakshman Kumar B,

+91 9440031459.

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sankar bombay
Sent: Thursday, February 25, 2016 3:18 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:24371] RE: 24361] Flange Buttering

 

Hai brother, 

 

  It's correct I have suggested same .. but my client told me to do buttering inside flange to close gap between pipe and flange due to ovality 

 

 Now my question is there is any code allow to do buttering at flange 

 

If yes means .. there is heat treatment necessary for that 

 

Thank you for your reply 

 

Best regards 

Sankar.k

On Thursday, February 25, 2016, Lakshman <lakshmankumar4@gmail.com> wrote:

Hi Friend,

Instead of flange buttering and re machining you can go for a layer build up on the pipe, and particularly for your case pipe has ovality, then as per the gap positions you can deposit single layer or multiple layer and have a proper grinding to give proper fitup to flange.

 

 

Thanks & Regards,

Lakshman Kumar B,

+91 9440031459.

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sankar krishnan
Sent: Tuesday, February 23, 2016 11:08 AM
To: Materials & Welding
Subject: [MW:24361] Flange Buttering

 

Dear All,

 

   In my project Slip on flange to Pipe We have 7 mm gap .. Pipe have ovality 

 

Now my client saying to us to do buttering at flange at machining 

 

If we do buttering at flange its allowed in the code book 

 

Please guide me

 

Best regards

Sankar.k

 

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