PPR Piping System

PPR Piping System
Execution Standard: National Standard GB/T 18742
Material: The primary raw material is Polypropylene Random Copolymer (PP-R), also known as Type 3 Polypropylene.
Diameter Range: Common specifications range from 20mm to 160mm. For residential installation, typical sizes are 20mm, 25mm, and 32mm.
Applications: Widely used in building cold and hot water supply systems, heating systems (e.g., underfloor heating), purified drinking water systems, and certain industrial fluid transportation.
Features: Hygienic, non-toxic, heat-resistant with good insulation properties (long-term service temperature ≤70°C), leak-free fusion-welded joints, corrosion-resistant and scale-free, with a long service life (up to 50 years or more).
Customization Supported.
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Description

1.Product Introduction

The PPR (Polypropylene Random Copolymer) piping system is a plastic piping system manufactured using third-generation polypropylene raw materials through advanced copolymerization technology. It has completely revolutionized the numerous drawbacks of traditional metal pipes, establishing itself as the core choice for modern building water supply, drainage, and heating systems.

Our PPR piping system goes beyond merely supplying individual pipes; it constitutes a complete system encompassing pipes, fittings, valves, and compatible intelligent control products. We are committed to using 100% imported high-end raw materials (such as premium-grade materials from Borealis) and incorporating innovative product designs (like the three-layer composite golden structure). This ensures that every drop of water, from the source to the tap, is safe and clean. Upholding the philosophy of “Health, Intelligence, and Longevity,” the system provides a one-stop fluid conveyance solution for residential, commercial, and industrial projects.

Product Specifications

2.Technical Parameters

Key Performance Indicators

Working Conditions /

Performance Specifications

Long-term service temperature

≤70°C with a designed service life of 50 years

Maximum instantaneous temperature

≤95°C

Long-term hydrostatic strength

(at 70°C, under specified pressure): 50-year service life

Thermal conductivity coefficient

Approximately 0.24 W/(m·K), only 1/200 that of steel pipes

Hygienic performance

All products are manufactured from food-grade raw materials, ensuring safe transport of drinking water

Short-term hydraulic pressure test

(at 20°C)Withstand a circumferential stress of 16 MPa.

Long-term hydraulic pressure test

(at 95°C): Withstand circumferential stresses of 4.3 MPa, 3.8 MPa, and 3.5 MPa under respective conditions

Oxidation induction time

≥20 minutes, demonstrating excellent thermal aging resistance

3.Connection Methods

  • Hot-Melt Socket Fusion:This is the most mainstream and reliable connection method. A dedicated hot-melt tool simultaneously heats the pipe end and fitting socket to a molten state. They are then quickly joined and held in place for a moment to cool, allowing complete molecular fusion. The resulting joint strength often exceeds that of the pipe itself, achieving a lifetime seal.
  • Electrofusion: Suitable for confined construction spaces or specific repair scenarios. Dedicated electrofusion fittings with integrated heating wires are used. When electrified, the internal heating element melts and fuses the pipe and fitting together. This method is relatively simpler to operate but comes at a higher cost.
  • Dedicated Fitting Connections:For connections to metal valves or equipment, PPR transition fittings with embedded metal threads are employed. Our fittings utilize proprietary reinforcement processes, such as the “dovetail groove” design for metal inserts, ensuring a robust and durable bond between metal and plastic for zero leakage.

4.Key Advantages & Selling Points

  • Health & Antibacterial, Clean Water Quality:The pipe’s inner wall features a silver-ion antibacterial layer with an antibacterial rate exceeding 99.9%, certified with CIAA (China Antimicrobial Material Association) Grade I certification. It effectively inhibits bacterial growth, safeguarding household water health.
  • Safe & Durable, Lifetime Assurance:Utilizing premium raw materials and an enhanced structure, the pressure-bearing capacity is increased by 15% compared to standard PPR pipes. The system passes long-term hydrostatic pressure tests. We provide a dual warranty covering both “product and installation” for 50 years on properly commissioned systems.
  • Hot-Melt Monolithic, Leak-Proof:Proprietary hot-melt fusion technology creates a monolithic pipeline system that never corrodes, fundamentally solving the common issue of joint leakage in traditional piping.
  • Thermal Insulation, Energy-Saving & Eco-Friendly:Extremely low thermal conductivity minimizes heat loss during hot water transport. The material is non-toxic, odorless, and recyclable, fully compliant with green building standards.
  • Ample Flow & System Intelligence:The optimized design features a smooth inner wall with low flow resistance. We provide system solutions such as high-flow designs, zero-cold-water recirculation, and whole-house active water circulation. These can be integrated with smart leak protection, water quality monitoring, and other AI technologies for intelligent water management.

5.Product Applications

  • Civil Buildings:Cold and hot water supply systems within buildings, including central heating pipelines.
  • Heating Systems:Suitable for low-temperature heating systems like underfloor heating and radiator connections.
  • Water Purification Systems:Can be used directly in pure water and direct drinking water piping systems.
  • Air Conditioning Systems:Piping for chilled water and cooling water in central air conditioning systems.
  • Industrial Sector:For transporting or discharging certain chemical media.

6.Testing & Certifications

  • Authoritative Raw Material Certification:Core materials are 100% sourced from internationally renowned brands like Borealis, ensuring pure material pedigree.
  • Comprehensive Performance Testing:Products not only pass all national mandatory type tests (e.g., hydrostatic pressure, oxidation induction time) but also undergo proactive reliability validations such as 8760-hour long-term hydrostatic pressure tests.

7.Manufacturing Process Flow

  • Raw Material Pre-processing:Premium PP-R base material and masterbatch are precisely mixed and dried to ensure purity and optimal moisture content.
  • Multi-layer Co-extrusion Molding:Utilizing three-layer co-extrusion technology, the inner layer, reinforcement layer, and outer layer are simultaneously extruded through multiple single-screw extruders. The central reinforcement layer significantly enhances the pipe’s pressure and temperature resistance.
  • Vacuum Calibration and Cooling:The molten pipe parison is precisely shaped in a vacuum calibration sleeve and then enters a spray cooling tank for gradual cooling and solidification, ensuring dimensional accuracy and excellent roundness.
  • Online Monitoring and Haul-off:A laser diameter gauge monitors the outer diameter in real-time, while a caterpillar haul-off unit provides steady pulling force.
  • Marking and Cutting:Permanent markings such as brand, specifications, and production date are printed online. Finally, the pipe is cut to precise lengths by a chip-free cutter.
  • Finished Product Inspection and Packaging:After undergoing strict factory inspections (including appearance, dimensions, instantaneous pressure tests, etc.), the products are packaged.

8.Packaging and Delivery

  • Professional Packaging:Pipes are packaged using thickened plastic film wrapping or custom woven bags, with protective caps installed on pipe ends to effectively prevent dust and scratches. Fittings are packaged in individual cardboard boxes or organized in storage bins with clear labeling for easy inventory management and access.
  • Efficient Delivery:We possess a mature logistics system and can provide flexible, punctual delivery services based on project requirements. Products must be stored indoors, avoiding direct sunlight and contact with oil, grease, or chemicals.

9.Sales Service

  • Pre-Sales:Provides complimentary technical solution design, product selection guidance, and project quantity estimation.
  • In-Sales:Offers professional installation technical briefings and construction guidance manuals. Engineers can be dispatched for on-site technical support upon request.
  • Worry-Free After-Sales Support:
  1. 50-Year Dual Warranty:For approved pipeline systems, we provide a 50-year warranty covering both product quality and installation quality.

10.Company Strengths

  • Brand and Capital Strength:With deep experience in the building materials industry and strong financial and R&D capabilities, we are a reliable long-term partner.
  • Full Industry Chain Integration:From strategic procurement of high-end raw materials to intelligent manufacturing and systematic “product + service” sales, we maintain full-chain control to ensure consistent end-product quality.
  • Innovation-Driven Development:We are not merely pipe manufacturers but “providers of high-end intelligent piping systems.” Continuous investment in R&D drives the industry toward healthier and smarter solutions.
  • Complete System Solutions:We provide whole-house piping systems covering water supply, heating, drainage, and water purification.
Zhongcai(Sancai) Pipe has 20 years of industry experience and serves over 500 customers worldwide. Its advantages include:
  • Advanced production capacity: Automated production line with an annual output of over 100000 tons, meeting large-scale demand. R&D Strength: Collaborate with universities to continuously innovate products, such as anti-static PE pipes. Customer case: Successfully participated in the Asian municipal water supply project, with a customer satisfaction rate of 98%. Environmental Commitment: Use recyclable materials, reduce carbon footprint, and support green buildings.
  •  Strict quality control: Establish a sound quality management system, implement full process quality monitoring from raw material procurement to product delivery, and rigorously inspect every link to ensure reliable product quality.
  • Rich industry experience: With years of deep cultivation in the pipe and fittings industry, we have accumulated rich project experience and successfully served numerous large-scale municipal, construction, industrial and other projects, winning widespread recognition and praise from customers.

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