DIN EN ISO 22721 (2010-01)现行
Conveyor belts - Specification for rubber- or plastics-covered conveyor belts of textile construction for underground mining (ISO 22721:2007)
出版：German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频
UNI EN ISO 22721:2008 - Identical
NF EN ISO 22721:2007 - Identical
SS EN ISO 22721 Ed. 1 (2007) - Identical
SN EN ISO 22721:2007 - Identical
NBN EN ISO 22721:2007 - Identical
BS EN ISO 22721:2007 - Identical
NEN EN ISO 22721:2007 - Identical
