Tuesday, January 18, 2011

[MW:9280] what is ASTM G 48 test method in DSS & SDSS

Dear all,
                 pls explain in detail what is ASTM G48 and why and where it is used in welding of DSS & SDSS.

Is it required for only WPS & PQR or also for welder qualification also?

thanks,
kk

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