... . The performance of the materials NO:ItemsIndex&Result1Tensile strength,MPaLongitudinal≥25Transverse≥252Welding strength,N/15mm≥603Oxidation,%≥254Pressure undertaking(10kPa,1500kg,1h)In ... ,72h)In good condition, unfading7Alkaline-resistance(10% NaOH,72h)8Tensile strength rate(80°C,100h)%Longitudinal≤8Transverse9Cold-resistance(-45°C)In ...