1)High density 2)Good flexibility 3) Bear strong shocks and ... in earthquakes 4)Long performance life of 50 years Features:1) Mainly used for municipal administration water supplies, buildings' watersupply, chemicals ... pipeline for farming4) Size: ID20 - ID630mm 5) Pressure: 0.4 - 1.6MPa6) High density, good flexibility, bears strong shocks and twists ...