... PEX,PERT,AL; 2.sizeaa16-32mm 3Different size and colors available; 4.Cerificate:CE, ISO 9001; ... φ16, 20,26, 32mm;2, Random polypropylene and aluminum3,95° temperature and pressure resistance;4, Healthful, environment-friendly;5, Heat preservation ... and energy saving; 6, Trustable quality and good after ...