ISO 4850 : 1979(R2014)现行
PERSONAL EYE PROTECTORS FOR WELDING AND RELATED TECHNIQUES - FILTERS - UTILISATION AND TRANSMITTANCE REQUIREMENTS
出版：International Organization for Standardization
专家解读视频
Gives the numbering of and transmittance requirements for filters intended to protect operatives performing manual work involving welding, braze welding, arc gouging and thermal cutting. It also gives guidance on the selection and use of these filters.
NFS 77 104 : 1983 - Similar to
BS 679(1989) : 1989 - Similar to
NEN EN 169 : 2002 - Identical
SNV NF EN 169 : 1992 - Identical
