PE-RT Type I Pipe DN16-32

Overview

Why PE-RT Type I Is the Global Standard for Floor Heating

PE-RT Type I pipe has become the dominant material for underfloor heating and domestic hot water plumbing worldwide. Unlike PEX (cross-linked polyethylene), PE-RT Type I does not require cross-linking during manufacturing, which makes it more flexible, easier to install, and fully recyclable. Produced from LG Chem SP980 virgin resin using advanced extrusion technology, our PE-RT Type I pipe delivers excellent thermal conductivity (0.4 W/m·K) for efficient heat transfer, handles continuous temperatures up to 70°C (95°C peak), and provides 50+ years of maintenance-free service in closed-loop heating systems.

◆ Exceptional Flexibility — Fewer Fittings, Faster Install. PE-RT Type I is the most flexible pipe in the PE-RT family, specifically engineered for underfloor heating where tight-radius loops and serpentine patterns are standard. The pipe bends naturally around corners without kinking, reducing the number of fittings and potential leak points. In cold weather installations, Type I retains superior handling characteristics compared to PEX and PE-RT Type II.

◆ Hot-Melt Weldable — The PEX Advantage Killer. Unlike PEX, PE-RT Type I is thermoplastic — it can be joined via socket fusion hot-melt welding, creating permanent, leak-proof connections as strong as the pipe itself. No expensive compression fittings, no mechanical joints that loosen over time. For closed-loop heating systems, hot-melt welded PE-RT Type I pipe eliminates the #1 failure mode: fitting leaks under the floor.

◆ EVOH Oxygen Barrier — Protect Your Boiler Investment. For closed-loop heating systems, we offer 3-layer and 5-layer PE-RT Type I pipe with an integrated EVOH (ethylene vinyl alcohol) oxygen barrier. This barrier prevents oxygen diffusion through the pipe wall, protecting metal boiler components, pumps, and radiators from internal corrosion. A compulsory requirement in most European heating standards.

◆ 0.4 W/(m·K) — Efficient Heat Transfer. PE-RT Type I pipe has higher thermal conductivity than both PEX and standard PE, meaning heat transfers faster from the hot water through the pipe wall into the floor screed. This translates to quicker room warm-up times, lower water temperature requirements, and reduced energy consumption — measurable efficiency gains that compound over decades.

◆ Food-Grade — Safe for Drinking Water. Manufactured from lead-free, food-grade virgin LG Chem resin, PE-RT Type I pipe is certified safe for potable hot and cold water. The smooth inner wall resists biofilm adhesion, prevents scale buildup, and maintains water quality without tainting taste, odor, or safety — recyclable at end of life with zero hazardous waste.

PE-RT Type I vs. PEX Pipe (Underfloor Heating Comparison)

Feature

Sanjie PE-RT Type I

PEX Pipe

Material

PE-RT (thermoplastic, no cross-linking)

PEX (cross-linked, permanent)

Joint Method

Hot-melt socket fusion (permanent)

Mechanical compression only

Flexibility

Excellent — bends without kinking

Good but stiffer

Recyclability

100% recyclable at end of life

Not recyclable (cross-linked)

Thermal Conductivity

0.4 W/(m·K) — faster warm-up

~0.35 W/(m·K) — slower

Oxygen Barrier

3-layer / 5-layer EVOH option

Available (but not all)

Cold Weather Install

Remains flexible

Becomes stiffer

Temp Range

−40 to 70°C (95°C peak)

−40 to 60°C (95°C peak)

Fitting Cost

Lower — weldable, fewer fittings

Higher — specialized fittings

Service Life

50+ years

Technical Specifications

Parameter	Standard / Value
Material	100% Virgin PE-RT Type I (LG Chem SP980 resin)
Outside Diameter	DN16 / 20 / 25 / 32mm
Wall Thickness	2.0mm standard (DN16/20); other sizes per SDR
Pressure Rating	0.6–1.25 MPa (S5–S3.2)
Operating Temperature	−40°C to 70°C continuous (95°C peak)
Thermal Conductivity	0.40 W/(m·K)
Connection Method	Hot-melt socket fusion / Mechanical compression
EVOH Option	3-layer / 5-layer oxygen barrier (for closed-loop heating)
Service Life	50+ years (within rated conditions)
Standards	ISO 22391 / DIN 16833
Certifications	ISO 9001 / CE
Packaging	Coils with protective strapping + weather-resistant outer

Application Scenarios

Residential & Commercial Underfloor Heating. PE-RT Type I pipe is the global standard for radiant floor heating in homes, apartments, offices, and hotels. Loop patterns up to 120m per circuit. Exceptional flexibility makes serpentine and spiral layouts fast to install with minimal fittings.

Domestic Hot & Cold Water Plumbing. Food-grade PE-RT Type I pipe for residential hot and cold water distribution. Hot-melt welded joints create monolithic, leak-proof connections. Smooth inner wall prevents scale buildup and biofilm, maintaining water quality for decades.

Solar Thermal & Heat Pump Systems. PE-RT Type I pipe handles the moderate-temperature outputs of solar water heaters and ground-source heat pumps. 0.4 W/(m·K) thermal conductivity maximizes heat transfer efficiency from collector to storage tank.

Radiator Connection & Building Heating. Neat, flexible PE-RT Type I pipe for connecting wall-mounted radiators in residential and commercial buildings. Hot-melt weldable joints eliminate leak-prone mechanical fittings, especially valuable in finished interiors where access is limited.

Trusted Across 110+ Countries

Our PE-RT Type I pipes serve HVAC contractors, residential developers, solar energy installers, and plumbing wholesalers worldwide. From underfloor heating to solar thermal, PE-RT Type I delivers comfort through engineering.

Service & Support

From EVOH barrier selection through circuit length calculation to installation training, our team supports your entire PE-RT Type I heating project.

Service Item	Details
Pre-Sales Consulting	Pipe sizing, SDR selection, EVOH vs. non-barrier recommendation, circuit length calculation.
Engineering Design	CAD/PDF with heating loop layout, manifold positioning, flow rate calculations.
Free Samples	At no charge. Customer covers freight. Thermal conductivity and pressure test certificates included.
Production & QC	ISO-certified using LG Chem SP980 resin. 100% tested for dimensional accuracy and pressure rating per ISO 22391.
Delivery	7–14 days. EXW, FOB, CIF. Protective coil packaging for damage-free shipping.
MOQ	Flexible per project scope.
Technical Support	Hot-melt socket fusion training, loop installation supervision, pressure testing, system commissioning.
After-Sales Warranty	50+ year comprehensive warranty. Dedicated team for technical support.
Payment Terms	T/T, L/C at sight. Flexible for long-term partners.
OEM / ODM	Custom coil length, EVOH layer configuration, color, and packaging available.