I indeed saw pure water being transported in stainless steel pipes on site, and pitting occurred on the pipelines. Is it related to the quality of the pipe?
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I learned from a paper that if softened water contains too much oxygen, it can be corrosive to pipes. From this, I infer that pure water is more corrosive than softened water. Is corrosion particularly severe on pipelines made of stainless steel? Are pure water pipelines not made of metal pipes? Use a non-metallic pipe, right? I would appreciate some advice from those who are more experienced. I indeed saw pure water being transported in stainless steel pipes on site, and pitting occurred on the pipelines. Is it related to the quality of the pipe? Is there still a problem with the design? 、、:handshake :handshake (Please submit topics in accordance with the rules from now on)
As far as I know, for transporting water, galvanized pipes are more than sufficient in most cases, unless the production facility has high requirements for the quality of the water. In the situation you described, it seems that electrode reactions have taken place in the pipelines; generally, it’s better to use pipes made of metals with different levels of activity, as this reduces the likelihood of electrode reactions and helps prevent corrosion of the pipes
Ordinary steel pipes will do; corrosion is inevitable. Dissolved oxygen is removed from boiler water because it can cause direct corrosion of equipment under high-temperature conditions. Under normal conditions, no special requirements are imposed on delivery pipelines. Ordinary tap water is more corrosive than softened or desalinated water, as it contains more impurities and is thus more prone to electrochemical corrosion.
Some articles mention that pure water can dissolve metals. Is it really that serious? Please have lxs-tzq answer it
I don’t have any reports on such pure water that can dissolve metals; I think you’re referring to that situation. As far as I know, pure water can dissolve metals; however, if no electrochemical reaction occurs, the amount involved is quite minimal, and it has no impact on design or actual production. Under normal circumstances, the solubility of water for substances is limited at a certain temperature.
Oxygen absorption corrosion may occur when using steel. When transporting pure water, PVC pipes are sufficient; using stainless steel isn’t necessary
Different stainless steel grades have varying corrosion resistance. Even pure water contains chloride ions and dissolved oxygen. I wonder what grade of stainless steel the original poster and you have chosen? If the grade is chosen incorrectly, it’s your own problem. If the right grade is chosen, then it’s a problem with the material.