PE-AL-PE yellow gas pipe 1.size:16*2,20*,25*2.5 ... roll 4.material:pe-al-pe PE-AL-PE gas pipe:1.size:16*2,20*,25*2.5, ... ., LTD introduced the whole Aluminum plastic multi-layer pipe product line from Gemany techology, which is the ... and laser” technology to produce the “Overlap pipe” and “Laser pipe”, resistance to the high temperature and high pressure ... fieldsCertificate:ISO,CE PE-AL-PE yellow gas pipe