Light weight ,easy to load and unload: PVC pipe is very light ,convenient to handle loading ,unloading and installing . Good chemical and drugs resistance :UPVC pipe has its excellent resistance to the erosion caused by acids and alkali ,a great help to the chemical industry . Small resistance to fluidity :thr smooth surface of UPVC pipe reduces resistance to the fluids .Its roughness coefficient is only 0.009,much litter than other pipes, under same discharges, smaller caliber of the pipe can be used. Strong mechanical strength :Good resistance to water pressure ,outside impact and pressure, is suited under any conditions . Great fire resistance and flame retardancy: Dimension of the conduit. Nomial SizeOutside DiameterWall ThicknessMean DiameterVery Light DutyLight DutyMedium DutyHeavy DutyDmminmaxminmaxminmaxminmaxminmax1615.715.0////1.61.92019.720.0////1.82.12.32.62524.725.0////1.82.12.52.83231.732.0////2.12.42.73.04039.740.0////2.42.73.13.45049.750.0////2.83.13.43.96362.763.0////3.03.53.94.56575.275.5////3.03.53.94.580(NZ)82.382.7//2.22.63.23.74.24.980(AU)88.789.11.82.22.42.83.54.14.65.3100(NZ)110.0110.42.22.62.93.44.35.05.76.5100(AU)114.1114.52.32.73.03.54.55.25.96.7125140.0140.42.83.33.74.35.56.37.28.1150160.0160.53.23.74.24.86.37.18.39.3