You make no reference to a code or standard but in the ones I am familiar with, the range of thickness the welder is qualified for is NOT related to the WPS used during testing. Reply
In WPS if a welder qualify in 6mm thk plate is he as qualify for 5 mm thk plate
You make no reference to a code or standard but in the ones I am familiar with, the range of thickness the welder is qualified for is NOT related to the WPS used during testing.