|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 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
