... , g/cm3, 20(C): 0.941-0.9652.Longitudinal Reversion, % (110(C)): <=33.Oxidation Induciton Time, min (200(C)): >=204.Extension Rate ... at Break. %: >=3505.Hydraulic Pressure Test:1)20(C), Hoop Stress is 12.4 Mpa, 100h: No Failure ... .2)80(C), Hoop Stress is 5.5Mpa, 165h: No Failure.3 ... )80(C), Hoop Stress is 5.0Mpa, 1000h: No Failure. ...