For fluid concentrated sulfuric acid, what is the service life of PVC pipes?
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Medium: concentrated sulfuric acid, PVC pipe, outer diameter 32. What is its service life? Can it still be used after being welded after ten years of use?
PVC pipes of good quality are supposed to last 50 years according to **regulations**, but in practice they usually last far less than that. It will suffer severe aging after about ten years, and it becomes more prone to cracking when welded; it is recommended to replace it after a certain period of use.
It cannot be used anymore. As mentioned on the second floor, under standard conditions they are supposed to last 50 years. In reality, due to exposure to wind and sun, most PVC pipes deteriorate significantly; especially those used for carrying loads, their service life does not exceed 10 years. Also, since PVC pipes are not expensive at the moment, it is recommended to replace them.
High-quality ones can last for 10 years; currently, many PVC pipes fail within less than 5 years due to their poor quality, so it is necessary to strengthen the safety management of PVC pipes