PPR Pipes and Fittings: All Types and Applications

PPR pipes and fittings have become the first choice in construction,water supply system,drainage system. As a professional PPR pipes and fittings manufacturer from China, We will comprehensively analyze the types of PPR pipes and fittings, accessories classification and purchase points, to help you create a safe and reliable pipe system.

PPR Pipe Technical Characteristics

1. Material Advantages

PPR (random copolymer polypropylene) uses advanced type III polypropylene as raw materials,includes:

• Temperature range: -20℃ to 95℃ (instantaneous up to 110℃)
• Working pressure: PN10-PN25 (1.0-2.5MPa)
• Linear expansion coefficient: 0.15mm/m·k
• Thermal conductivity: 0.24W/mk

2. Environmental Certification

According to NSF, WRAS, KTW and other international drinking water certification, lead content < 0.1μg/L, in line with GB/T17219 health standards.

PPR vs Other Pipe Materials — A Quick Comparison

How does PPR compare to traditional piping materials? Here is a side-by-side look at what matters most:

Comparison Factor	PPR	Galvanized Steel	Copper	PVC
Corrosion Resistance	Excellent — immune to rust and chemical corrosion	Poor — rusts over time	Good	Good
Service Life	50+ years	15–20 years	25–30 years	25–40 years
Joint Method	Heat fusion — seamless, leak-proof	Threaded — prone to leakage	Soldered or threaded	Solvent cement
Thermal Conductivity	Low (0.24 W/m·K) — minimal heat loss	High — significant heat loss	Very High — major heat loss	Low
Weight	Lightweight — easy handling	Heavy — requires more labor	Moderate	Lightweight
Initial Cost	Moderate	Low	High	Low
Maintenance Requirement	Minimal — maintenance-free	High — regular inspection needed	Moderate	Low
Suitability for Hot Water	Excellent (up to 95°C)	Good	Excellent	Not suitable

PPR vs Other Pipe Materials

The Main Type of PPR pipeline

Classification By Pressure Level

Types	Working Pressure (Mpa)	Applications	Wall Thickness Range
PN10	1.0 MPa	Cold water system, low pressure irrigation	2.0-3.5 mm
PN16	1.6 MPa	Multistory building water supply system	2.3-4.2 mm
PN20	2.0 MPa	High temperature heating, industrial piping	2.8-5.4 mm
PN25	2.5 MPa	High pressure steam systems, special industries	3.5-6.5 mm

Sort By Function

• Cold water pipe (marked by blue line): Suitable for water supply system ≤40℃
• Hot water pipe (marked by red line): Withstand 70-95℃ high temperature medium
• Antibacterial tube: Add nano silver ion, antibacterial rate > 99%
• Oxygen blocking tube: EVOH oxygen blocking layer, oxygen permeability < 0.1g/m³·d

Specification Parameters

Commonly used outside diameter specifications (mm) :

• Home decoration: 20, 25, 32 mm
• Commercial engineering: 40, 50, 63 mm
• Industrial systems: 75, 90, 110 mm

PPR Fittings Complete System

1. Connecting Accessories

Type	Angle Specifications	Applications
ELBOW	45 °/ 90 ° /180 °	Reroute
EQUAL COUPLING		Equal diameter pipes are connected in straight lines
REDUCING COUPLING	Reducing range ±50%	Different pipe diameters are connected
UNION	Detachable design	Equipment access interface

2. Branch Accessories

• Tee: Equal diameter/reducing diameter, T /Y shunt
• Four-way Cross: Cross pipe connection
• Multi-Cross: Integrated distribution system

3. Control Accessories

• Ball valve: DN15-DN100 full flow control
• Globe valve: precise flow control
• Temperature control valve: automatically adjust the medium temperature

4. Special Function Accessories

Types of accessories	Core technology	Functional features
Filter Valve	100 mesh stainless steel strainer	Intercepting pipe impurities
Pressure reducing valve	Diaphragm type pressure regulator	Stabilizing system pressure ±0.05MPa
Silencer tube fitting	Spiral diversion design	Noise reduction 15-20 dB

The complete PPR product family can be grouped into three main categories: pressure-rated pipes, functional pipes, and system fittings (which include connection, branch, control, and special function fittings). Combined, these components provide a comprehensive piping solution for any project — from residential plumbing to industrial systems.

PPR Fittings Complete System

Advantage of PPR Pipeline System

1. Comparison of installation efficiency

• Hot melt connection: 15-30 seconds/connector
• Traditional threaded connection time: 3-5 minutes/connector

The comprehensive construction efficiency is increased by 60%

2. Service life Comparison

Material	Life expectancy	Maintenance cycle
PPR	50 years +	Maintenance-free
Galvanized pipe	15 years	Annual overhaul
Copper pipe	25 years	5 year detection

3. Cost of PPR Pipe System Analysis

• The initial cost is 40% lower than copper tubing
• Maintenance costs are reduced by 80%
• Combined use cost savings of 65%

Installation Best Practices — Step-by-Step Checklist

Proper installation is the key to ensuring PPR system performance and longevity. Follow these steps:

Step	Action	Key Requirement
1. Pipe Cutting	Cut pipe squarely with a pipe cutter	Ensure clean, burr-free cut
2. Surface Cleaning	Clean pipe end and fitting socket	Remove dirt, oil, and moisture
3. Depth Marking	Mark insertion depth on pipe	Match socket depth of fitting
4. Heating	Heat pipe and fitting simultaneously at 260±5°C	Use correct heating time (see formula below)
5. Joining	Insert pipe into fitting with a straight push	No twisting during insertion
6. Cooling	Hold joint in position until fully cooled	Summer: 15 min, Winter: 30 min
7. Visual Inspection	Check for uniform melt ring around joint	Indicates proper fusion

Heating Time Formula: Pipe diameter (mm) ÷ 10 × 1.2 seconds

Pipe Diameter	Recommended Heating Time
20mm	3–4 seconds
25mm	4–5 seconds
32mm	5–6 seconds
40mm	6–7 seconds
50mm	7–8 seconds
63mm	8–10 seconds

PPR Fittings used in systems

Professional Purchasing Guide

1. How to Choose High Quality PPR Pipes And Fittings

• Observe the incision: The incision of high quality pipe is smooth and without burrs
• Combustion test: No black smoke when burning, transparent melt droplets
• Light transmittance: Light opaque design to prevent algae growth

2. Suggestions for PPR Pipe System Build

• S5 series (wall thickness 2.0mm) is recommended for cold water system.
• S3.2 series (wall thickness 2.8mm) recommended for floor heating system
• S2.5 series (wall thickness 3.5mm) should be selected for the main riser of high-rise buildings.

3. Key Point of PPR Pipes And Fittings Installation

• Hot melt temperature: 260±5℃
• Heating time formula: PPR pipe diameter (mm)/10 x 1.2 seconds
• Cooling time: 15 minutes in summer, 30 minutes in winter

Quick Selection Guide — Choose the Right PPR Pipe for Your Project

Use this table to quickly identify the correct PPR pipe series for different applications:

Application Scenario	Recommended Series	Wall Thickness	Pressure Rating	Key Consideration
Cold Water Supply	S5 (PN10)	2.0–3.5 mm	1.0 MPa	≤40°C, residential or light commercial
Hot Water Supply	S3.2 (PN20)	2.8–5.4 mm	2.0 MPa	70–95°C, continuous hot water
Floor Heating System	S3.2 (PN20)	2.8–5.4 mm	2.0 MPa	Use oxygen barrier pipe for heating
High-Rise Main Riser	S2.5 (PN25)	3.5–6.5 mm	2.5 MPa	High pressure requirements in tall buildings
Industrial Piping	S2.5 (PN25)	3.5–6.5 mm	2.5 MPa	High temperature + high pressure
Healthcare / Food Facility	Antibacterial Pipe	Varies by series	Varies by series	>99% antibacterial rate, hygiene priority

Pro Tip: For systems with fluctuating pressure, choose one series higher than the calculated requirement. For example, if your system operates at 1.2 MPa, select PN16 or PN20 rather than PN10 to ensure adequate safety margin.

PPR Pipe for High-Rise Main Riser

Supplier

Luoyang Datang Energy Tech Co., Ltd. is a leading Chinese manufacturer specializing in high-quality plastic pipes and fittings. Equipped with state-of-the-art automated production lines and supported by a team of 200 professionals, we offer an extensive product line comprising over 150 types of plastic pipes and fittings designed for water supply and  drainage systems, gas transmission, and floor heating systems. Our main products include PVC Pipes and Fittings, PE (HDPE) Pipes and Fittings, PPR Pipes and Fittings, and PEX Floor Heating Pipes. 

Should you have any inquiries regarding our Healthy PPR Pipes and Fittings, please do not hesitate to contact us!

Tel.:0086-183 3790 0677

Wechat: 0086-183 3790 0677

Whatsapp: 0086-183 3790 0677

Email: [email protected]