... Gravity, g/cm3(20°C)0.941~0.965Longitudinal Reversion, %(110°C)≤3Oxidation Induction Time, min(200°C)≥20Extension Rate at Break,%≥350Hydraulic ... Pressure Test20°C,100h, Hoop Stress is ... System in Pingyin County ,Shandong Prov. Construction Site (1) (2) White HDPE 100 pipe