|DN  ##pipe_size##millimeters| ##OTHER##
DN 20,   2|20|2
DN 20,   3|20|3
DN 20,   4|20|4
DN 20,   5|20|5
DN 20,   6|20|6
DN 20,   7|20|7
DN 20,   8|20|8
DN 25,   2|25|2
DN 25,   3|25|3
DN 25,   4|25|4
DN 25,   5|25|5
DN 25,   6|25|6
DN 25,   7|25|7
DN 25,   8|25|8
