With the exception of a handful of oxidants, its resistance to erosion by various chemical substances is commendable. It remains unaffected by rust or corrosion, preventing the growth of bacteria, and demonstrating an absence of electrochemical corrosion.
This product boasts excellent heat resistance that makes it ideal for use in high-temperature environments. It can withstand working water temperatures of up to 70 ℃ for extended periods, and even short spikes in temperature up to 95 ℃ are no problem. It has a softening temperature of 140 ℃ and is incredibly lightweight, with a density of just 0.89~0.9g/cm3. In fact, it's only one-ninth the weight of a steel pipe and one-tenth the weight of a copper pipe. This light weight means that transporting and installing it is easy, reducing both transportation costs and the amount of labor required for installation.
PP-R material is designed to prioritize hygiene and safety. It is composed solely of carbon and hydrogen, without the inclusion of any toxic heavy metal salt stabilizers. To ensure its hygienic performance, rigorous testing has been conducted by the national authoritative department.
Under the rated operating temperature and pressure, PPR pipes have an impressive service life exceeding 50 years.
The pipe's interior wall is extremely smooth and does not accumulate scale, resulting in minimal water flow resistance. With a friction coefficient of only 0.007, this is significantly lower than the same specification metal pipes. In fact, water flow capacity is more than 30% greater than that of metal pipes.
The excellent thermal insulation performance of PP-R pipe can be attributed to its low thermal conductivity. At a temperature of 20 ℃, the thermal conductivity of PP-R material ranges between 0.21 ~ 0.24W/mk, which is considerably lower than that of steel pipe. This significant difference in thermal conductivity enables PP-R pipe to provide excellent insulation against heat transfer.
PP-R material has a small expansion force, which is attributed to its low elastic modulus. This characteristic makes it ideal for applications such as direct burial and concealed laying in embedded walls and floor surfaces. Temperature changes have minimal impact on PP-R material due to its limited expansion force. Consequently, it is a reliable and suitable choice for these particular construction practices.
PP-R pipes are securely connected through a hot-melt process, which involves joining pipes and fittings of the same material to form a strong bond. The interface created by this method exhibits higher tensile, bending, and impact strength compared to the actual pipe body. Consequently, the risk of water leakage is effectively prevented.