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Recent content by MVlem
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Black stains after pickling and passivation.
Hello all, One of our contractors is constructing a 316 vessel for us. After pickling and passivation i went over for an inspection and saw some black marks on 1 or 2 welds. The QC-manager told us these were due to over-pickling and will not have any detrimental effect on the vessel. That last...- MVlem
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- Replies: 3
- Forum: Corrosion engineering
