Refer para 7.2.5.3 of ASTM A380 and take precaution as described
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Chaitanya Purohit
Sent: Monday, August 03, 2009 10:00 AM
To: materials-welding@googlegroups.com
Subject: [MW:2869] Re: cladding
Dear Javed,
After de-cladding you have to use the CuSO4 (Copper Sulfate) solution for etching the decladding area. Upon swabbing the exposed CS will show the copper shade (later on will turn to clack or dark braown) and if any Inconel present it will not show any change in the colour /shine..
If shiny portion is still exist in your back clad area, do some grinidingto remove it completely and repeat the above test again.
Regards.
C. K. Purohit
On Mon, Aug 3, 2009 at 7:04 AM, Mohammad Javeed <mmubasharjaveed@gmail.com> wrote:
Dear all
I have one query about cladding. In our GTL project slug catcher is going on with construction code of B31.8. We have one pipe line of material 1SO 3183-3 L450 MCS with 3mm inconel cladding. As per our method statement we should require minimum 5mm de- cladding from the bevel edge before fit-up with machining or grinding.
So my question is, how we conform or ensure that cladding material is removed or not?
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