... 1.Pex-a multilayer pipe 2.Size:dn16/20/25/32mm 3.High temperature reistant, evoh pex-b pipe 1. ... water, drinking water pipeline system, the product is a green building materials.4. Due to the existence ... the middle layer of aluminum, the expansion co-efficient a samll metal pipe with considerable strength, toughness, impact ... 50550x4,5058P02.63563x6,0058P02.75575x7,505 pex-a,pex-b underfloor heating pipe