I.S. EN 28659:1991现行
Thermoplastic Valves - Fatigue Strength Test Method
出版：National Standards Authority of Ireland
专家解读视频
Specifies the endurance test necessary to confirm the ability of hand-operated plastics valves to withstand prolonged use, with repeated opening and closure.
SS EN 28659 Ed. 1 (1991) - Identical
UNE EN 28659:1992 - Identical
ISO 8659:1989 - Identical
UNI EN 28659:1993 - Identical
NF EN 28659:1991 - Identical
NBN EN 28659:1992 - Identical
BS EN 28659:1992 - Identical
DIN EN 28659 (1991-06) - Identical
ONORM EN 28659:1991 - Identical
