DS EN 1124-4:2013 Pipes And Fittings Of Longitudinally Welded Stainless Steel Pipes With Spigot And Socket For Wastewater Systems - Part 4: Components For Vacuum Drainage Systems And For Drainage Systems On Ships Defines requirements, dimensions and tolerances for pipes and fittings of longitudinally welded, stainless steel pipe with spigot and socket used for vacuum drainage systems inside and outside buildin