What type of pipe material is in common practice to convey industrial process wastewater (acidic = pH 4)? It appears, in spite of being susceptible to the corrosion, carbon steel pipe is still used widely in the industrial wastewater with allowance for scraficing thickness for corrosion (i.e. provide extra thick pipe). Is that true with industrial practice? Can PVC pipe be used in lieu? (Application is outdoor, the pipe is not in continuous service. The pipe will have drain connections to drain the content when not in use and leave the pipe empty. No freeze protection is considered. The area has high temperature upto 100 F during summer and may go down to zero sometime during winter.
Any thoughts and insights will be highly appreciated.
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