... tube, cast iron pipe and conventional plastic pipe5. convenient installation, adopt aprons way to stop water, good sealing performance ... , long life7. Non pollution, in accordance with national water standards NoItemrequirements1Elongation at break,%≥ 3502Longitudinal shrinkage rate (110 ° ... 200 °C), min≥ 204Tensile strength, Mpa≥ 165Weather (total pipe receiving ≥ 3.5Gj / m after aging energy)80 ° ...