1. dedicated DN50-2000mmfor DI, carbon steel, HDPE, PVC, FRP, GRP, others required 2. Universal (wide range ) DN50- 600mm. Material: ductile iron (DI); standard: ISO2531,BS EN545, BS EN598, AWWA C219, AWWA C110, ASME B16.42; FBE coating; suitable medium: potable water、drainage、sewage、waste water; suitable tempreture: -40deg-125deg; packing: plastic film plus pallet; origin: China.