NS EN 148-3 Ed. 2 (1999)现行
Respiratory Protective Devices - Threads For Facepieces - Part 3: Thread Connection M45 X 3
出版：Norwegian Standards (Norges Standardiseringsforbund)
专家解读视频
Specifies a thread connection, M 45 x 3, which may optionally be used for facepieces for positive pressure breathing apparatus. Applies to self contained compressed air breathing apparatus designed as positive pressure breathing apparatus. Does not apply to closed circuit breathing apparatus, to negative pressure breathing apparatus or to diving equipment.
SS EN 148-3 Ed. 2 (1999) - Identical
UNE EN 148-3:1999 - Identical
UNI EN 148-3:1993 - Identical
NF EN 148-3:1999 - Identical
I.S. EN 148-3:1999 - Identical
NBN EN 148-3:1999 - Identical
BS EN 148-3:1999 - Identical
DIN EN 148-3 (1999-04) - Identical
ONORM EN 148-3:1999 - Identical
NEN EN 148-3:1999 - Identical
SN EN 148-3:1999 - Identical
UNI EN 148-3:2000 - Identical
