NF P16-326-4:2005 Pipes and fittings of longitudinally welded stainless steel pipes with spigot and socket for waste water systems - Part 4 : components for vacuum drainage systems and for drainage systems on ships.
2005NF P16-326-4:2005 Pipes and fittings of longitudinally welded stainless steel pipes with spigot and socket for waste water systems - Part 4 : components for vacuum drainage systems and for drainage systems on ships.