DIN EN 474-9 (2010-04)现行
Earth-moving machinery - Safety Part 9: Requirements for pipelayers (includes Amendment A1:2009)
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
NEN EN 474-9:2006 - Identical
NBN EN 474-9:2007 - Identical
BS EN 474-9:2006+A1:2009 - Identical
SN EN 474-9:2007 - Identical
UNE EN 474-9:2007 - Identical
UNI EN 474-9:2009 - Identical
NF EN 474-9:2007 - Identical
