"passivation of 316L welds"

Question:

"At present our fabricators do not passivate any of the 316L stainless steel welds, but only grind the top surface back to a smooth finish. Is this acceptable? The media in contact with these welds in future would consist mainly of 'towns' water at up to 80C."

Answer:

For your specified service, grinding welds flush without a passivation treatment is most probably acceptable.

 

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