For Cr>3%, it is always better go for purging, if customer insist for all low alloy, pl do it because it will better and uniform root penetration
KGP
On Wed, Apr 14, 2010 at 10:57 PM, qaqcmpm <mamujeebali@gmail.com> wrote:
One of our client specn asks for argon purging of root pass (pressure
retaining welds) for GTAW for Low alloy Cr-Mo steel? why it is
required any idea?
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