... Ductile Cast Iron Pipe 2.Class K9,TYTON Joint,L=6m/5.7m 3.Advantages:Strength,Durability ,Safety,long seivice life 1. Ductile ... HYDROSTATIC PRESSURE TESTED ONE BY ONE. Mechanical properties of ductile cast iron pipes: Ductile Iron PipeTensile Strength (N/mm²) ≥420 Yield Strength ... Hydro Test : Norminal Diameter mmHydro Test Pressure for K9 pipe Mpa80-3005.0350-6004.0700-10003.21100-20002.52200-26001 ...