Material selection
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I would like to discuss the material selection issue with Haiyou. It concerns the choice of material for pipes used to transport cooling water in a project; the water contained in these pipes has a high concentration of metal ions, with magnesium ions accounting for up to 400 mg/l, while smaller amounts of iron, manganese, calcium, zinc, etc., are present. The pH of the solution is 8-9. I’m not sure whether carbon steel or stainless steel pipes should be used, and I’m concerned about the possibility of oxidation and corrosion.
What kind of cooling water is this? It contains so many calcium and magnesium ions; it’s also alkaline. Aren’t you worried about scaling? Oxidation might not be a big issue, but everything gets covered by scale
Carbon steel will do; as mentioned above, what should be done if the cooling water enters the equipment and causes scaling?
Thank you for your explanation, Haiyou. I was wrong last time; in fact, it is a magnesium-containing liquid – water from the upstream process system with a high concentration of magnesium ions... It needs to be used further downstream!