IFAN EVOH PEXA Pipe is a high-performance composite tubing tailored for closed radiant underfloor heating circuits.

Built around a peroxide-crosslinked PEXa core integrated with an EVOH oxygen barrier film, this pipe restricts oxygen permeation into circulating hot water, safeguarding metallic heating components from corrosion. It is well-suited for villas, residential apartments and commercial radiant heating schemes, where sustained system reliability is essential.

Size	M/Roll	G/M
10x1.5 PEXA	200	45
12x1.1 PEXA	200	50
12x1.5 PEXA	200	60
16×1.5 PEXA	200	80
17×2.0 PEXA	200	90
18×2.0 PEXA	200	100
20×2.0 PEXA	200	114
22×2.5 PEXA	100	155
22×3.0 PEXA	100	180
40x3.7 PEXA	4m	410
50x4.6 PEXA	4m	626
63x5.8 PEXA	4m	1050

Multilayer Composite Structure

The performance of EVOH oxygen barrier PEXa tubing comes from well-bonded multi-layer design. The inner PEXa core transports hot circulating water, boasting great heat resistance, pressure tolerance and bendability. Its cross-linked molecular structure keeps consistent performance under standard heating temperature and pressure. Special adhesive tie layers tightly connect dissimilar polymer materials, preventing delamination during delivery, on-site laying and years of continuous operation. The middle EVOH film serves as the core oxygen barrier, blocking gas penetration efficiently. An optional outer protective jacket shields the barrier layer from scratches and mechanical harm during construction.

Precise Production & Quality Control

Manufacturing EVOH PEXA oxygen barrier pipe demands strict control over raw material compatibility and co-extrusion parameters. Our workshop adopts synchronized multi-layer co-extrusion technology to fuse the PEXa base, adhesive layer and EVOH barrier in one continuous forming process. Technicians closely monitor layer thickness, extrusion temperature and surface finish. Every finished coil passes dimension checking, pressure testing and oxygen permeability inspection. The oxygen penetration test is a critical check item to verify the barrier meets international heating industry standards.

Core Product Benefits

Effective Oxygen Barrier Protection Oxygen seeping into closed heating loops triggers rust on metal fittings, pumps, boilers and manifolds. The embedded EVOH layer greatly cuts oxygen diffusion, lowering corrosion risks and extending the whole heating system's service cycle.

Preserve Superior PEXa Flexibility Even with composite multi-layer construction, our EVOH PEXa pipe retains excellent bending property. Heating installers can arrange heating loops freely following zone plans, as long as they comply with the factory-specified minimum bending radius.

Lower System Maintenance Costs By suppressing oxygen-induced corrosion, this tubing reduces the chance of rust sludge building inside the heating circuit. It stabilizes heating efficiency and cuts down overhaul work, though actual lifespan is also affected by water quality, installation quality and operating conditions.

Stable Performance for Hydronic Heating The PEXa pressure-bearing substrate matched with EVOH barrier makes this pipe ideal for closed radiant heating. Purchasers need to confirm working temperature, pressure rating and local standard requirements before specification confirmation.

Application Scenarios

IFAN EVOH PEXA oxygen barrier pipe is widely used for residential underfloor heating, villas, hotels, office buildings and other hydronic heating projects. Its flexible layout simplifies pipe routing, and the oxygen barrier protects all metallic components inside the heating circuit.

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