... of AWWA/ANSI C219Center SleeveRolled Steel to BS EN 10025-1993 Grade S275End RingsDuctile iron to BS EN1563-1997Grade EN-GJS-450- ... 1753"100Ductile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp AC109.6-127.8M12*1754"150Ductile Iron,PVCu,Cast Iron,Steel,Cast Iron Met& ... 2008"250Ductile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp AC272.0-289.0M12*21510"300Ductile Iron,PVCu,Cast Iron,Steel,Cast Iron Met&Imp ...