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Re: [MW:12542] pickling and passivation for 316 L SS

By Materials & Welding
truely your client determine the need 4 pickling and passivation on your piping work? they must have considered the needs of the piping assemblage,which is the major factor that need to be considered. but 4 most weld joints that should be void of contaminant in the pickling is very wellcome

From: "mus.hawa@yahoo.com" <mus.hawa@yahoo.com>
To: welding group <materials-welding@googlegroups.com>
Sent: Tuesday, September 20, 2011 4:56 AM
Subject: Re: [MW:12483] pickling and passivation for 316 L SS

Sudhakar,

It's much depending on your project quality requirement. As for my experience, after welding there should be pickling and passivation. Of course you won't detect any contamination
In short term on the welded joint.

Rgds,
Mus
Sent by Maxis from my BlackBerry® smartphone
From: sudhakar kuppuswamy <mechsudhakar@gmail.com>
Sender: materials-welding@googlegroups.com
Date: Mon, 19 Sep 2011 23:29:47 +0400
To: <materials-welding@googlegroups.com>
ReplyTo: materials-welding@googlegroups.com
Subject: [MW:12482] pickling and passivation for 316 L SS


Dear Experts,
                       It is mandatory to do pickling and passivation for 316 L SS piping systems, irrespective of services and thickness?  No PWHT is done on  that piping systems, and we have not found any Surface contaminations due to welding.

But our client is insisting us to do Pickling and passivation on welded joints. It is really required?

please share your views.
 
Regards
Sudhakar.k


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