NBN EN 1560:1997

This European Standard establishes a material designation system either by symbols or by numbers for cast iron. The designation system by symbols is applicable to a) standardized cast iron materials (see 3.1); b) non-standardizedcast iron materials (see 3.2). The designation system by numbers is only applicable to standardized cast iron materials (see 3.1). NOTE: The standardized designation by symbols does not necessarily imply that the materials is standardized.