mdal

PPR-AL-PPR Plastic Composite Pipe Size 20*3.0/25*3.25/32*4.0/40*5.0/50*5.5/63*7.0 20*3.4/25*4.2/32*5.4/40*6.7/50*8.3/63*10 PPR-AL-PPR Plastic Composite PipeSizeSDR7.4/S3.2/PN2020*3.025*3.2532*4.040*5.050*5.563*7SDR6/S2.5/PN2520*3.425*4.232*5.440*6.750*8.363*10.5This 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 ...