PP tube PP tube main purposes which 1, building hot and cold water systems, including central heating systems;? 2, building heating system, including floor, wall and radiant heating system; 3, drinkable pure water supply system; 4, the center (centralized) air-conditioning systems; 5, transfer or discharge of chemical media, such as industrial piping systems. 1.PP tube material molecules only carbon, hydrogen, no harmful toxic elements are present, reliable health, not only for the hot and cold water pipes, can be used to clean drinking water systems. 2, thermal insulation. PP-R pipe thermal conductivity of 0.21w / mk, only steel pipe 1/200. 3, good heat resistance. Vicat softening point of PP-R pipe 131.5 ℃. The maximum operating temperature of up to 95 ℃, to meet building water specification requirements hot water system. 4, long service life. PP-R pipe in working temperature 70 ℃, working pressure (PN) 1.OMPa conditions, the service life of up to 50 years; at room temperature (20 ℃) ??life of up to 100 years. 5, easy to install, reliable connection. PP-R has good weldability, pipes, fittings can melt and fused connections, easy installation, reliable joints, the strength of joints is greater than the strength of the pipe itself. 6, recyclable materials. PP-R waste through clean, after crushing recycling in pipe, tube production. Recycled material amount does not exceed 10% of the total, does not affect product quality.