ONORM EN 28233:1991现行
Thermoplastics Valves; Torques; Test Method
出版：Osterreichisches Normungsinstitut
专家解读视频
Specifies a test method for determining the closing and opening torque of thermoplastics valves. Applies to all types of thermoplastics valves meant to be used for transporting fluids. Coverage includes definitions, apparatus and procedure.
ISO 8233:1988 - Identical
UNI EN 28233:1993 - Identical
NF EN 28233:1991 - Identical
I.S. EN 28233:1991 - Identical
NBN EN 28233:1992 - Identical
BS EN 28233:1992 - Identical
DIN EN 28233 (1991-06) - Identical
UNE EN 28233:1992 - Identical
SS EN 28233 Ed. 1 (1991) - Identical
EN 28233:1990 - Identical
