PPR Pipe DN20-160 PN10-25

Overview

Why PPR Is the World's Most Trusted Indoor Plumbing Material

PPR (Polypropylene Random Copolymer) pipe has been the dominant indoor plumbing material across Europe, Asia, and the Middle East for over three decades — and for good reason. With 1/200th the thermal conductivity of metal pipes, PPR pipe naturally insulates hot water and prevents condensation on cold water lines. Socket fusion welding at 260°C creates a homogeneous joint — the pipe and fitting literally become one piece of PPR, eliminating the leak-prone mechanical connections that limit metal and PEX systems. 100% virgin food-grade PPR resin ensures zero toxicity for potable drinking water, zero scaling buildup, and zero corrosion throughout the 50-year service life.

◆ Socket Fusion — The Joint Becomes the Pipe. PPR pipe connections are not mechanical seals — they are molecular bonds. When the pipe and fitting are heated to 260°C and pressed together, their surfaces melt and fuse into a single homogeneous PPR structure. The joint is stronger than the pipe wall itself and will never loosen, leak, or degrade. For building plumbing where pipe joints are hidden inside walls and floors for decades, this leak-proof permanence is non-negotiable.

◆ 100% Virgin Food-Grade Resin — Zero Recycled Scrap. Recycled PPR scrap reduces pressure resistance, shortens service life, and can contaminate drinking water with heavy metals from unknown sources. Every Sanjie PPR pipe is extruded from certified virgin food-grade PPR resin. Non-toxic, odorless, bacterium-resistant — safe for direct potable water from main to tap.

◆ Multi-Layer Composite Options — Lower Expansion, Higher Pressure. Standard PPR pipe has a thermal expansion coefficient of 0.15 mm/(m·K). For installations requiring straighter pipe runs at high temperature, our composite PPR pipes with fiberglass or aluminum intermediate layers reduce thermal expansion significantly while increasing pressure resistance. Some variants include an anti-bacterial inner layer for enhanced hygiene in healthcare and food processing.

◆ Low Thermal Conductivity — Built-In Insulation. At only 1/200th of steel's thermal conductivity, PPR pipe naturally retains heat in hot water lines and prevents sweating condensation on cold water lines. No external insulation needed for most indoor installations — saving material cost, installation labor, and maintenance complexity.

◆ Quiet — Smooth Inner Wall, Low Flow Noise. PPR pipe's ultra-smooth inner wall eliminates the turbulence noise that echoes through metal pipes. Combined with the material's inherent sound-dampening properties, PPR plumbing systems operate at noticeably lower noise levels — a critical consideration for residential bedrooms, hospital wards, and hotel rooms.

PPR vs. Metal & PEX Plumbing Pipe

Feature

Sanjie PPR Pipe

Galvanized Steel Pipe

Joint Method

Socket fusion — molecular bond

Threaded — leak-prone over time

Corrosion

100% immune

Rusts from inside, reduces flow

Thermal Loss

1/200 of metal — self-insulating

Constant heat loss, condensation

Scaling

None — smooth surface maintained

Scales heavily, reduces diameter

Service Life

50+ years

15–25 years

Water Quality

Food-grade — zero contamination

Rust and metal in water

Noise Level

Low — sound-dampening material

High — echoes water flow

Installation

Hot-melt tools — quick, quiet

Threading machine — loud, slow

Weight

Lightweight — easy handling

Heavy — structural load

Cost

Economical for indoor plumbing

Higher material + labor cost

Technical Specifications

Parameter	Standard / Value
Material	100% Virgin PPR (Polypropylene Random Copolymer, food-grade)
Diameter (DN)	20–160mm
Pressure Rating	PN10 / PN12.5 / PN16 / PN20 / PN25
Density	0.89–0.91 g/cm³
Operating Temperature	−20°C to 70°C continuous (95°C instantaneous peak)
Thermal Expansion	0.15 mm/(m·K); lower for composite variants
Connection	Socket fusion welding at 260°C
Thermal Conductivity	~1/200 of steel pipe
Service Life	50+ years
Standards	ISO 15874 / DIN 8077/8078 / NSF
Certifications	ISO 9001 / CE / NSF
Fittings	Socket / Elbow 45°/90° / Tee / Reducer / Coupler / Valve / End cap
Packaging	Bundled with end caps + weather-resistant wrapping

Application Scenarios

Residential Hot & Cold Water Plumbing. The global standard for apartment and house plumbing. Socket fusion PPR joints hidden inside walls last 50+ years without leaks. Food-grade resin ensures safe drinking water. No rust, no scaling, no replacement ever.

Radiator & Floor Heating Connections. PN20/PN25 PPR pipe for radiator connection lines and underfloor heating distribution. 70°C continuous operation handles heating system temperatures. Composite PPR with fiberglass reinforcement stays straight at elevated temperatures.

Hotels, Hospitals & Schools. Food-grade PPR ensures safe water for guests, patients, and students. Low-noise operation maintains acoustic comfort. Anti-bacterial composite PPR pipe options available for enhanced hygiene in healthcare and food service environments.

Industrial Fluids & Compressed Air. PPR pipe handles corrosive chemical fluids and compressed air in industrial settings. Chemical-resistant to most acids and alkalis. Smooth inner wall prevents pressure loss in compressed air systems.

Trusted Across 110+ Countries

Our PPR pipes serve plumbing contractors, residential developers, hotel and hospital operators, and industrial facility managers worldwide. From family homes to five-star hotels, PPR pipe delivers safe, silent, permanent plumbing.

Service & Support

From PN rating selection through socket fusion training to system pressure testing, our team supports your entire PPR plumbing project.

Service Item	Details
Pre-Sales Consulting	PN rating selection (hot vs. cold water), composite vs. standard PPR recommendation, plumbing layout optimization.
Engineering Design	CAD/PDF with pipe sizing, riser layout, expansion compensation design.
Free Samples	At no charge. Customer covers freight. Pressure test and food-grade material certificates included.
Production & QC	ISO-certified using 100% virgin food-grade resin. 100% tested per ISO 15874 and DIN 8077.
Delivery	7–14 days. EXW, FOB, CIF. Container-optimized loading for efficient freight.
MOQ	Flexible per project scope.
Technical Support	Socket fusion welding training, pressure testing supervision, 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 color, diameter, PN rating, composite layer, and marking available.