[MW:26753] Base metal and Weld metal combination

Dear all experts.

 

Pl need feedback and further in depth understanding on the following points:

 

Case1:                                                         

one metal from P No. 3 to any
metal from P No. 3 does not qualify P No. 1 to P No. 1

 

Case 2:

It qualifies one metal from P No. 4 to any
metal from P No. 4, 3 or 1. but does not qualify P No. 3 to P No. 3 or P No. 1 to P No.1

 

I would much appreciate if someone give more details regarding, grouping for base metals with weld metals, for similar and dissimilar metals.

 

Thanks

 

Razz Khan

Welding Inspector