Petroleum and related products - Determination of the extreme-pressure and anti-wear properties of lubricants - Four-ball method (European conditions) (ISO 20623:2017); German version EN ISO 20623:2018
Petroleum and related products - Determination of the extreme-pressure and anti-wear properties of fluids - Four ball method (European conditions) (ISO 20623:2003); German version EN ISO 20623:2003— 26 стр.
Playing field equipment - Portable and permanent socketed goals - Functional, safety requirements and test methods; German version EN 16579:2018— 44 стр.
