DIN Standards Committee Valves
ISO 2531
Ductile iron pipes, fittings, accessories and their joints for water applications
Rohre, Formstücke, Zubehörteile aus duktilem Gusseisen und ihre Verbindungen für Wasser- oder Gasleitungen
Responsible national committee
NA 119-07-17 AA - Metal pipes and fittings for piping systems outside buildings