2, PP-R pipe below 5°c There is a certain low-temperature brittleness, the construction should be careful in winter, cut pipe to use sharp knives cut slowly. Pipeline can not be installed on the pressure, percussion, if necessary, to protect vulnerable to external sites covering material.

3, PP-R pipe a long-term aging degradation by ultraviolet radiation easily installed outdoors or in direct sunlight will be required by a dark-colored protective layer of dressing.

4, PP-R pipe and metal pipe or water addition to connect using the flange with a threaded insert or mechanical connection, the rest should be using hot melt connection, so that pipeline integration, no leakage points.

5, PP-R pipe line expansion coefficient larger (0.15mm / m°c), or buried in the Ming installation Concealed piping must be taken to prevent a pipeline expansion deformation of technical measures.

6, pipe installed in a sealed tube (buried), and covering the decorative layer (non-buried dark deposited) before pressure test. Cold water pipe system, pressure test pressure of 1.5 times the working pressure, but not less than 1MPa; hot water pipe test pressure of two times the working pressure, but not less than 1.5MPa. Pressure test of time and methods of technical rules of order.

7, PP-R pipe for surface or buried Concealed piping must be installed according to regulations sticks, hanger.