Re: [MW:29175] Backing gas as per API RP 582

Manoj, 

your Question is simple and answer also very simple as experts are stated in trailing emails..why you so confusing on this ... you are not clear while asking the question I think so . 

Suresh 

On Fri, Mar 1, 2019 at 10:15 AM Manoj John <manojacgnr@gmail.com> wrote:

If we weld an attachment like pad, cleats, supports to pipe line having below 4 mm thick wall thickness with SMAW process 

On Tue, Jan 29, 2019 at 3:27 PM George Dilintas <dilintas@gmail.com> wrote:

Usually root pass is not performed with SMAW. That is the reason 

Στις Δευ, 28 Ιαν 2019, 04:33 ο χρήστης Manoj John <manojacgnr@gmail.com> έγραψε:

Dear Experts,

As per clause 7.3 of API RP 582 Ed. 2016 back purging required for GTAW & GMAW process but no where I could found for other process like SMAW.  Is it mean that if we do welding with SMAW process back purging is not required?

Please share your interpretation.

Thanks and regards

Manoj.

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Thanks  & Best Regards,

Suresh Paidi

 

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