all specifications, good raw material of ppr and copper, high quality,good looking, long service life. male thread tee.Available size: 20*1 ... : heat conduction index is 1/200 of the metal pipe’s, effective in heat preservation and energy conservation of hot water pipe.5, Light ... equipment, you can use copper insert fittings.8, Long service life: the pipe system can be normally used in 50 years or ...