Back purging criteria in gtaw welding
Back purging criteria in gtaw welding
(OP)
Hello,
For Gtaw of cr-mo steel,
is there back purging required for p11(1% Cr) and P22(2.25%Cr) cr-mo steel
because customer spec. say above 4% Cr required back purging.
At which minimum % of Cr it is required.





RE: Back purging criteria in gtaw welding
RE: Back purging criteria in gtaw welding
RE: Back purging criteria in gtaw welding
If the AWS structural welding code applies, the Engineer, representing the Owner, can modify the code to suit specific project requirements.
Best regards - Al