NS EN 148-2 Ed. 2 (1999)现行
Respiratory Protective Devices - Threads For Facepieces - Part 2: Centre Thread Connection
出版：Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频
Applies to centre threads for respiratory protective devices. Not applicable to diving equipment and positive pressure demand breathing apparatus.
SS EN 148-2 Ed. 2 (1999) - Identical
UNE EN 148-2:1999 - Identical
UNI EN 148-2:2000 - Identical
NF EN 148-2:1999 - Identical
I.S. EN 148-2:1999 - Identical
NBN EN 148-2:1999 - Identical
ONORM EN 148-2:1999 - Identical
DIN EN 148-2 (1999-04) - Identical
NEN EN 148-2:1999 - Identical
BS EN 148-2:1999 - Identical
SN EN 148-2:1999 - Identical
