PEX pipe Rifeng pex pipe is produced with crosslinked polyethylene. Crosslinking is obtained through a chemical process that increases the bonds between macromolecules to form a more complex structure than the normal polyethylene.Rifeng 5-layer pex pipe is made up of five layers: crosslinked polyethylene, adhesive, oxygen barrier, adhesive, crosslinked polyethylene. The layers of adhesive bind the two layers of crosslinked polyethylene to the central barrier layer by a thermal reaction. The barrier layer is right in the center, this preventing the pipe from being damaged by scratch and from reducing its performance due to the moisture. Nominal pipe thickness
