Regelwerk
Wasserfachliche Norm DIN EN 14525 Entwurf 2020-08 Großbereichskupplungen und -flanschadapter aus duktilem Gusseisen zur Verbindung von Rohren aus unterschiedlichen Werkstoffen: Duktiles Gusseisen, Grauguss, Stahl, PVC-U, PE, Faserzement
559, Steel tubes for water and sewage ISO 2531, Ductile iron pipes, fittings, accessories and their joints for water or gas applications DIN 19800, Asbestzementrohre und -formstücke [...] established by CEN/TC 164 in the field of water supply. In respect of potential adverse effects on the quality…