... 50 specifications. Hot and cold water pipes with the points, S4, S5 for cold water pipe, series of normal use tube ... temperature, S2 to S3.2 series for normal use hot water pipe, tube, the fluid temperature more than 70 °C, for ... life of 50 years Residential pipe system of cold; Industrial water and chemical material conveying, discharge; Pure water, drinking water pipe; Beverage, liquid drug ...