What material is used for the cooling water total phosphate medium?
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This post was last edited by gn_1984 on 2015-8-27 09:46. Total phosphate in cooling water: 2.01; total hardness: 315.84; chloride content: 448.54 mg/L; pH: 8.69; conductivity: 2840. Can carbon steel coated with epoxy resin be used, or is 316L necessary?
Epoxy resin can be applied to carbon steel; it’s not necessary to use 316L
May I ask, which of the above indicators is related to corrosion?
With chlorine present, isn’t it more dangerous to use austenitic stainless steel?
Chloride ions are present, so stainless steel cannot be used
Cooling water? PVC may not be suitable; there’s also CPVC…
Epoxy resin is applied to carbon steel. As a result, once quality issues such as damage occur, repair may be quite difficult.
Carbon steel will work fine. Because the designed chlorine concentration for circulating water (also classified as cooling water) is 750 mg/L ； In this design, the chlorine concentration in the cooling water is 448.54 mg/L for chlorides. Carbon steel allows ≤1,000 mg/L ； The scientific conclusion is that stainless steel allows a level of ≤300 mg/LE; therefore, using carbon steel pipe materials is sufficient to meet the requirements for circulating water, eliminating the need to use stainless steel. http://bbs.hcbbs.com/thread-1430263-1-1.html
Chloride ions can be handled with stainless steel! But what is the maximum limit?
The right view is that everything should be kept within a reasonable range