Causes of copper pipe corrosion
Since World War II, 18 trillion pounds of copper pipes have been produced in the United States, accounting for about 80% of the water supply configuration system, that is, equivalent to 7 million meters of copper pipes. In the whole record of unresolved service behavior, corrosion problems caused by corrosive water are rare, mostly caused by unqualified design or work quality problems. In general, the popularity of copper pipe applications in the United States fully proves that water is not corrosive to copper.
Copper water pipes are very corrosion resistant. Corrosion of copper pipes in water or special environment is rare. When corrosion occurs, it is usually caused by one of the following reasons:
(1) Corrosive hard well water causing pitting corrosion;
(2) Acidic soft water makes the copper pipe unable to form a protective film;
(3) Large or disordered water flow in the pipe due to system design or installation;
(4) Unqualified work quality;
(5) Excessive or corrosive flux;
(6) Corrosive soil conditions.
terms of settlement to Causes of Copper Pipe Corrosion:
Corrosive water spots can be determined and treated by chemical analysis to make the composition within the allowable limit. They are the total amount of soluble solids (T.D.S.) containing sulfate and chloride, the pH value ranges from 7.2 to 7.8, the content of carbon dioxide gas is very high (more than 10ppm) and dissolved oxygen exists.
A qualified water treatment personnel stipulates that any corrosive water can be treated so that it does not corrode the pipeline materials. Generally speaking, this includes the rise of pH value and the combination or elimination of carbon dioxide gas. Sometimes simple ventilation can be carried out. For example, the spray treatment method outdoors is sufficient.