Five layer resistance oxygen tube to solve the ordinary steel tubes can not stop the oxygen permeability, leading to shorten the service life of pipeline system, safety of decline, the pipe adopts the five layer co extrusion production process,, outer plastic layer (PE-RT, PEX, Pb, etc.), middle layer for EVOH (ethylene / vinyl alcohol polymer) oxygen barrier layers.

The oxygen resistance of the pipe is achieved by using the barrier characteristic of EVOH..

Five layer of oxygen pipe with excellent performance is widely used in the radiator connection, cold hot water, floor heating and air-conditioning pipe, industrial pipeline, fire pipeline, marine pipeline and other fields.

According to the inner and outer layers of different materials can be divided into the following three types:
1. PE-RT/EVOH/PE-RT; plastic inner and outer layer for heat resistant non crosslinked polyethylene, respectively, for inside and outside layer of hot melt and the middle layer EVOH binder phase.
2 PEX/EVOH/PEX; internal and external plastic layer for XLPE, respectively, inner and outer layer and the middle layer of EVOH hot melt adhesive bonding.
3 PB/EVOH/PB; internal and external plastic layer for polybutylene, respectively inner layer and the middle layer of EVOH hot melt adhesive bonding.