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What’s causing the cracks at the tower connection?

2026-01-05View Original

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Our company has a distillation column that has been in use for almost two years. In the past two days, cracks were detected in the connections between the column and the heat exchanger (photos available). After grinding and welding, longitudinal cracks appeared at the edges of the welds as well (photos available). The base material is 316L, and the welding material used was A022. What do you think could be the cause of this?

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