how much root concavity allowed

how much root concavity allowed?


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the answer depends on the code used.

some welding codes limit root concavity to 1/32" or about .8mm

others allow for 1/16" 1.3mm

there are also sometimes stipulations on whether it is uniform all around the joint, or localized.

you will need to determine which welding code is being referenced for a more precise answer.

best regards,
'
jody