Three levels.
1. PPR-AL-PPR three-layer composite pipe is composed of three layers of polypropylene layer, aluminum film layer and polypropylene layer. It has good heat resistance, corrosion resistance and thermal stability.
2. PPR-AL-PERT three-layer composite pipe is made of polypropylene layer, aluminum film layer and polymer layer. It has good heat and frost resistance, as well as better thermal conductivity.
3. PPR-FRP three-layer composite pipe is made of polypropylene layer, glass fiber layer and polypropylene layer. It has good corrosion resistance, frost resistance and heat resistance, and has a long service life. easy to maintain.
Under the conditions of working pressure (P.N) 1.0 MPa, the service life can reach more than 50 years; at normal temperature (20 ℃), thelife span can reach more than 100 years;
Excellent Features of Lesso Floor Heating Pipes
1. Non-toxic and hygienic. The raw material molecules of PP-R contain only carbon and hydrogen elements. There are no harmful and toxic elements. It is used not only in hot and cold water pipes, but also in drinking water systems.
2. Insulation and energy saving. The thermal conductivity of PP-R pipe is 0.21 W/mK, which is only 1/200 of that of steel pipe.
3. Better heat resistance. The Vicat softening point of PP-R pipe is 131.5℃. The maximum operating temperature can reach 95°C, which can meet the requirements of hot water systems in building water supply and drainage regulations.