... : low thermal conductivity which is only 1/1500 of brass pipe, and 1/250 of steel pipe3. Non-toxic: no heavy ... .6mm 63mm*5.8mm, 75mm*6.8mm ,90mm*8.2mm , 110mm*10mm. S3.2 series:2.0MPa for Hot water clean ... .mm 63mm*8.6mm, 75mm*10.1mm ,90mm*12.3mm , 110mm*15.1mm.. S4 series 1.6MPa for clean potable water ... ,50mmx5.6mm,63mm*7.1mm,75mm*8.4mm,90mm*10mm.110mm*12.3mm PPR pipe