Recommendations for non-metallic material pipes resistant to dilute sulfuric acid
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The 4-fluorinated metal-lined pipes used for dilute sulfuric acid in sulfuric acid production plants often leak; are there any non-metallic pipes that can be used under such conditions?
Non-metallic materials such as polytetrafluoroethylene (PTFE), polyethylene (PE), polypropylene (PP), or polyvinyl chloride (PVC) can be considered for use as pipes. These materials exhibit excellent resistance to dilute sulfuric acid, as well as strong corrosion resistance. When making a choice, it is necessary to take into account the specific operating temperature and pressure conditions in order to determine the most suitable material type and pipe design. .
Is there a problem with the quality? Some of those available on the market are of poor quality; they start leaking after about a year of use, while others can last for ten or eight years.
Using PTFE lining is basically the best option. Compare with relevant product standards, strictly control quality, and change the manufacturer