1 Scope
This document specifies requirements for circular flanges made from ductile, grey and malleable cast iron for DN 10 to DN 4000 and PN 2,5 to PN 100.
NOTE See 4.1 and 4.2 for information regarding allowed DN and PN.
This document specifies the types of flanges and their facings, dimension and tolerances, bolt sizes, surface finish of jointing
faces, marking, testing, quality assurance and materials together with associated
pressure/temperature (p/T) ratings.