PPR Composite Pipe

PPR Composite Pipe Size SDR9/S4/PN16 20*2.3 25*2.8 32*3.6 40*4.5 50*5.6 63*7.1 SDR7.4/S3.2/PN20 20*2.8 25*3.5 32*4.4 40*5.5 50*6.9 63*8.6 SDR6/S2.5/PN25 20*3.4 25*4.2 32*5.4 40*6.7 50*8.3 63*10.5 This type of pipe has a structure of five layers:the inner and outer layers are made of PPR, which are tightly bonded with PP-based adhesive to the mid-layer of aluminum, which is well joined through welding. Greatly reduced linear expansion coefficient,only 1/4 of that of PPR.Improved resistant to impulse under low temperature, resistant to UV-ray.Can work under higher temperature and higher pressure.