Circulating water issues
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What is pre-film formation in a circulating water system? It is related to those factors – when it is necessary and when it isn’t
Pre-coating is the process of forming a layer on the metal surface to prevent corrosion. Pre-coating is generally carried out when the circulating water system is started up for the first time or after a major maintenance session ； It is generally carried out after water washing, rust removal, and chemical cleaning. The effect of pre-coating is checked through hanging sample tests