[MW:19105] Change in Supplementary Essential Need re-qualification?

Dear Experts,

i need your clarify that the changes in material group number with the
same p number need another welding qualification or not.

my case i have WPS for A312 grade TP 316, P no. 8 , group no. 1 to itself.
it's right to use it to weld A312 grade TP 310s, P no. 8 , group no.
2 to itself.

Ezzat

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