The interface of PPR pipe adopts hot-melt technology, and the pipes are completely integrated together. Therefore, once the installation pressure test passes, there will be no water leakage, and the reliability is very high. However, this does not mean that PPR water pipe is flawless, with poor high temperature resistance and pressure resistance, and the long-term working temperature cannot exceed 70 ℃; The length of each section is limited and cannot be bent for construction. If the pipeline laying distance is long or there are many corners, a large number of joints will be used in construction; Pipes are cheap, but the price of accessories is relatively high. In terms of comprehensive performance, PPR pipe is the pipe with high cost performance at present, so it has become the preferred material for home improvement.
PPR pipes sold on the market mainly have two colors, white and gray. Why is this difference? The dealer's answer is caused by the different PPR particles of raw materials used. Due to the inconsistency of thermal expansion coefficient and expansion force between PPR pipe and metal elbow clamp, in the process of long-term thermal expansion and cold contraction friction, coupled with the external tension of the pipe itself, it intensifies the depth of scratches, resulting in water leakage of floor heating pipe, burying serious hidden dangers for the safety of floor heating system and increasing the service life of floor heating: installing pipe with plastic elbow clamp can effectively avoid scratches and Whitening, facts have proved that the cost of using plastic elbow card is far lower than the cost of repairing pipe scratches and whitening; The safety and reliability of floor heating pipes are improved, so as to increase the service life of floor heating.
