Consequently the choice involving rubber and metal joints is depending on the chemical ecosystem and corrosion defense necessary. a. Expansion joint rubber flanges need to be in connection with a flat area. Normal one/sixteen″ lifted facial area is Alright. Unacceptable depressions or protrusions are typical of victaulic or comparable flanges. https://felixwrlew.jiliblog.com/95834202/the-ultimate-guide-to-what-is-a-piping-expansion-joint