-iron pipes.Corrosion resistanceIt has a good quality of acid resistance, alkali resistance, chemicals resistance and electrochemistry resistance, so the point of corrosion will not occur during the use.Easy installationIt adopts the glue and soft joining. Therefore, the installation is quite easy and the sealing is reliable.Long service lifeThe service time can reach more than 50 years under the normal working pressure.Low costThe cost of the transport and installation is low, and the total eng