DIN EN 969 (2009-07)现行
Ductile iron pipes, fittings, accessories and their joints for gas pipelines - Requirements and test methods
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
NF EN 969:2009 - Identical
ONORM EN 969:2009 - Identical
NEN EN 969:2009 - Identical
UNE EN 969:2009 - Identical
NBN EN 969:2009 - Identical
SS EN 969 Ed. 2 (2009) - Identical
SN EN 969:2009 - Identical
