... " with iso9001, CE and WRAS certificate high quality and reasonable price prompt delivery CouplingMATERIAL SPECIFICATION&STANDARDSUniversal Couplings designed and manufactured under ... *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 ...