NF A48-720*NF EN 877:1999 Cast iron pipes and fittings, their joints and accessories for the evacuation of water from buildings. Requirements, test methods and quality assurance.
1987NF A48-730:1987 FOUNDRY PRODUCTS. CAST IRON PIPES AND FITTINGS WITHOUT PRESSURE FOR SEWERAGE SYSTEMS. DOUBLE SPIGOT ENDS UU SERIE.
1983NF A48-720:1983 FOUNDRY PRODUCTS. CAST IRON DRAINAGE PIPES AND FITTINGS WITHOUT PRESSURE. SPIGOT AND SOCKET ENDED SERIES OR SO-CALLED EU SERIES. SPIGOT SERIES OR SO-CALLED UU SERIES.