1.Environment the process of production, construction and use PP-R pipes will not make any pollution to the environment. 2.Economical The price for PP-R pipes is almost the same with the galvanized pipes. With convenient construction, they are cheaper. 3.Light weight The density of PP-R pipes is 0.89-0.9g/cm, only 1/8 of the steel pipes, 1/10 of copper pipes. The light weight will reduce the transportation cost and the construction intensity 4.Healthy The materials of PP-R pipes are formed with just two elements, that is, Carbon and Hydrogen. The sanitation performance of the material has passed the examination by the government authority -