DIN EN 50411-2-9-2010 光纤通信系统用纤维形成体和闭塞物.产品规范.第2-9部分:S&A类鼓风纤维管缆用非密封闭塞物.德文版本EN 50411-2-9-2010
Fibre organisers and closures to be used in optical fibre communications systems - Product specifications - Part 2-9: Non-sealed closures for air blown fibre microduct cable, for category S & A; German version EN 50411-2-9:2010