Hebei Ruijie Pipe Industry Co., Ltd. is one of the most reliable manufacturers and suppliers of pe-rt underfloor heating pipe in China. With abundant experience, we warmly welcome you to buy high quality pe-rt underfloor heating pipe for sale here from our factory. Also, pricelist and free sample are available.
PE-RT Underfloor Heating Pipe is the core water conveyance component of hydronic underfloor heating systems. Made from extruded heat-resistant polyethylene (PE-RT), it combines temperature resistance with low-temperature flexibility, enabling coiled layouts for even floor heat dissipation. Available in mainstream diameters from 16~32mm, it supports hot-melt connections for easy installation and repair, and is widely used in residential and commercial low-temperature radiant heating systems.
Product Advantages
Temperature & Freeze Resistant
No brittle cracking at -40℃, suitable for conventional gas boiler / air-source heat pump heating systems.
01
Flexible & Easy to Lay
Cold-bendable without extra elbows, fast piping, adapts to complex layouts.
02
Uniform Heat Conduction
Even heat dissipation with low thermal loss; smooth inner wall resists scaling.
03
Hygienic & Safe
No harmful substances released in closed heating circuits; for domestic water supply, sanitary approval must be confirmed.
04
Repairable & Long-Lasting
Hot-melt repair available for exposed areas; corrosion-resistant, long buried service life.
05
Installation Preparation
Verify specifications and check pipes for damage. Prepare auxiliary materials: insulation boards, reflective film, staples, pressure test pump, etc. Plan circuits-single loop length 60~100m (optimal ~80m), length difference between loops on the same manifold ≤15m, each main room on an independent loop.
Laying Steps
1. Lay insulation layer and reflective film, ensuring tight joints to minimize heat loss.
2. Lay pipes at designed spacing (standard 150~200mm, denser near cold exterior walls). Use arc transitions at bends; minimum bending radius ≥5× pipe diameter. No sharp folds or flattening.
3. Fix pipes with staples: 500~700mm spacing on straight sections, 200~300mm on bends.
4. Connect to manifold and conduct pressure test: test pressure = 1.5× working pressure and ≥0.6MPa; stable for 1h with pressure drop ≤0.05MPa = qualified.
5. Backfill concrete under pressure (fill layer strength ≥C15); prohibit heavy machinery from rolling over pipes.
Precautions
• Control hot-melt insertion depth to prevent blockage.
• No stepping on or throwing heavy objects onto pipes.
• Gradually increase temperature during initial system startup; avoid rapid heating/cooling.
• Drilling or nailing strictly prohibited in heating areas during construction.
• Backfill under maintained pressure; observe for 24h with no pressure drop for final acceptance.
FAQ
Q: What's the difference between PE-RT and PEX underfloor heating pipes?
A: PE-RT is thermoplastic and can be hot-melt repaired, making installation convenient. PEX is cross-linked and cannot be hot-melted; repairs require mechanical fittings. PE-RT is preferred for residential use due to easier maintenance.
Q: How to choose between 20×2.0 and 20×2.3?
A: 20×2.0 is standard wall thickness (S5 series), ideal for wall-hung boilers and low-pressure systems, offering high cost-effectiveness. 20×2.3 is a thickened version with higher pressure resistance, suitable for high-rise buildings and high-temperature water systems.
Q: Can damaged underfloor pipes be joined?
A: Joints are strictly prohibited in buried (screed) areas per industry standards (JGJ 142-2012). If damaged underground, the entire loop must be replaced. Repairs are only allowed above ground (e.g., near the manifold) using hot-melt or mechanical fittings, followed by re-pressure testing.
Q: How to determine the right specification?
A: Mainstream for homes: 20×2.0mm; for larger units/main pipes: 25×2.3mm/25×2.8mm; for central heating/high-rise: choose thickened versions (e.g., 20×2.3mm or higher series), and confirm pressure rating with the manufacturer when ordering.
If you need PE-RT Underfloor Heating Pipe or have any purchasing requirements, please contact us. We will provide you with a professional product solution and quality service.
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