[MW:3859] Clarification on range of qualification as per AWS D1.1

Dear Members,

 

I have a query related to welder qualification for TKY joints as per Table 4.11 and Fig 4.27 - AWS D1.1

 

1. Can we use a pipe with thickness less than 12mm or 0.5" during welder qualification. What is the minimum thickness allowed per code.

 (Since the specified thickness is nominal, may i use a pipe with thickness less upto 12.5% - Material SA 106 GrB)

 

2. If welder is qualified in Group 1, can he weld Group 2 & 3 .

 

 

 

Thanks and regards

 

S. Rama subba reddy

Offshore/Onshore Inspection group

Saudi Aramco

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