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AFNOR
NF L22-135
En Vigor
1975-02-01
Precision hexagon head bolts with split pin hole. Sim thread (rech.).
AFNOR
AFNOR
NF EN 60534-8-3
En Vigor
2011-09-01
Industrial-process control valves - Part 8-3 : noise considerations -
Control valve aerodynamic noise prediction method
AFNOR
NF EN 50131-6
En Vigor
2017-10-27
Alarm systems - Intrusion and hold-up systems - Part 6: Power supplies










