Dear Yoga, As per API RP 582 you'll need to purge when the process pipe wall thickness is 6.3mm and less. As suggested by Manpreet, you can use Argon, or you can use purging gas as Nitrogen (Welding Grade) where you can have considerable cost saving if your purging volume is more. Regards, A.Praveen Welding Engineer Muscat
--- On Thu, 1/27/11, manpreet <manpreetsin88@rediffmail.com> wrote:
From: manpreet <manpreetsin88@rediffmail.com>
Subject: Re: [MW:9499] Purging Gas for Fillet Weld
To: "materials-welding " <materials-welding@googlegroups.com>
Date: Thursday, January 27, 2011, 8:51 AM
Dear Yoga, for GTAW welds, an internal 100% argon shall be used for the root pass and second layer (i.e. Hot Pass) of Stainless Steel Welds. Regards Manpreet Singh On Wed, 26 Jan 2011 21:29:54 +0530 yoga nandhan wrote > > Can anyone please clarify, for Fillet weld to be carried outin a S.S Pipe (4.5mm wall thickness) to support joint with GTAW Process. Is itrequired to give Purging Gas in pipe. (as per Clause 7.5 of API582. (attached)). Pipe Material: SA312 TP316/316L Support Material: SA240TP316/316L Thickness: 4.5 mm Max. Thanks in advance.
>
Best Regards, YoganandhanPalaniappan -- >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.
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