... fittings manufactured by vortex are mainly used for transferring the drinkable water,waste water . 1), Product Information The ductile ... manufactured by vortex are mainly used for transferring the drinkable water,waste water and for irrigation.2),Standard* ISO2531 ... fittings manufactured by vortex are mainly used for transferring the drinkable water,waste water and for irrigation. 2),Standard* ISO2531 ...