I suppose the stringent requirement applies before start of weld and the other one while the welding progresses. Normally Duplex & Superduplex are continuously monitored during welding and there are chances thet weld fumes may mix with purging gas.
Check with the Client who had written the specification
Thanks & Regards
J.Gerald Jayakumar
On Thursday, February 20, 2020, 01:27:50 PM GMT+7, Dino <regino.millan9@gmail.com> wrote:
dear Frend,
I would like to know why welding duplex required two purging one is from mix gas and the another one is analyzer oxygen.
thanks.
Dino
On Wednesday, 28 December 2011 15:56:29 UTC+8, Martin Prad wrote:
Hi friends,
I have 2 different specification which the requirements are different for the oxygen level in purging gas during the welding of super duplex pipe.
One of them calls for 25 ppm (0.0025%) another one calls for 5000 ppm (0.5%). Could you please shed some light on this as which one is up to the standard with references?
Thanks,
Martin.
https://materials-welding.blogspot.com/
https://www.linkedin.com/groups/122787
---
You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
To unsubscribe from this group and stop receiving emails from it, send an email to materials-welding+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/materials-welding/e204dfc8-7b3e-4a7b-9741-f0243bb131ff%40googlegroups.com.
No comments:
Post a Comment