HDPE Siphon Drainage System

HDPE Siphon Drainage System
Execution Standard: Can refer to T/CECS 10153-2021 Groove-type connected high-density polyethylene (HDPE) pipes and fittings for building drainage.
Material: Core pipes are made of High-Density Polyethylene (HDPE)
Diameter Range: Common nominal diameters range from DN40 to DN300 and above.
Applications:Primarily used for highly efficient rainwater drainage from large-area flat roofs of major public buildings, industrial plants, stadiums, airports, etc.Also applied in siphon drainage collection systems for scenarios like green roofs on underground garage decks and rooftop gardens.
Characteristics: Extremely high drainage efficiency, no pipe slope required, smaller pipe diameters, fewer downpipes, corrosion and impact resistant material; good flexibility allowing for some degree of displacement.
Customization Supported.
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Description

1.Product Introduction

The HDPE Siphon Drainage System is a sealed pressure-flow roof rainwater drainage system composed of HDPE pipes, fittings, and specialized rainwater outlets connected via thermal fusion. Its core component is the siphon rainwater outlet, which effectively prevents air entry when rainfall reaches a certain intensity, enabling the entire pipeline system to rapidly establish a siphon effect.

Product Specifications

2.Technical Parameters

General Pipe Performance
Material High-Density Polyethylene (HDPE)
Common Pipe Diameter Range DN20mm – DN1600mm
Common Lengths e.g., 2.9m, 5.8m, 11.8m, or customizable
Pressure Rating Common pressure-bearing range: 0.6MPa – 2.6MPa
Temperature Adaptation Range
Fluid Temperature 0℃ to 65℃ (short-term up to 95℃)
Ambient Temperature -40℃ ~ 65℃
System Performance and Standards
  • Execution Standards:Product manufacturing can reference standards such as CE and ISO. System design must comply with technical codes like CECS 440:2016 from the China Association for Engineering Construction Standardization.
  • Core Advantage:Compared to traditional gravity drainage, it can more than double the drainage efficiency with the same pipe diameter. Furthermore, pipes can be installed horizontally suspended, requiring no slope.

3.Connection Methods

Ensuring the system’s airtightness is paramount for HDPE siphon systems, primarily achieved through the following two connection methods, with thermal fusion being the key to eliminating leaks:

  • Butt Fusion / Electrofusion Welding:The most mainstream and reliable connection method. The pipe and fitting ends are heated to a molten state and then joined, cooling to form a seamless, monolithic connection with high strength and excellent sealing. This is the preferred method to guarantee a leak-free siphon system.
  • Groove-type / Flange-type Mechanical Connections:Suitable for sections requiring disassembly or interfaces with other systems. Requires specialized HDPE groove-type fittings and rubber sealing rings, complying with standards like T/CECS 10153-2021.

4.Key Advantages & Selling Points

  • Highly Efficient Drainage, Space-Saving:The siphon effect enables rapid drainage, quickly removing accumulated water from roof surfaces. Suspended pipes require no slope and can be installed horizontally, saving valuable building space.
  • Safe, Reliable, and Long-Lasting:HDPE material is corrosion-resistant, impact-resistant, and its flexibility enables seismic resistance. Professional thermal fusion connections ensure leak-free joints, with a designed service life of up to 50 years.
  • Complete, Integrated System:We provide not only pipes but also a complete set of matched components including specialized rainwater outlets, suspension systems, and fasteners, ensuring the entire system is compatible, safe, and reliable.

5.Product Applications

Primarily used for roof rainwater drainage in large buildings with high requirements for drainage efficiency, safety, and building space utilization.
  • Typical Applications: Large public buildings (e.g., stadiums, airports, exhibition centers), commercial complexes (shopping malls, hotels), hospitals, industrial plants, and high-rise residential buildings.
  • Extended Applications:Integrated with rainwater harvesting modules, it can be upgraded into a rainwater recycling system, achieving environmental protection and energy savings.

6.Testing & Certifications

  • Product Test Reports:Issued by qualified third-party testing institutions (e.g., National Testing Center for Chemical Building Materials), covering items such as hydrostatic strength, ring stiffness, and impact resistance.
  • System Certifications:The company participates in or leads standard development, and its core components like rainwater outlets have obtained relevant certifications.
  • Environmental Certifications.

7.Manufacturing Process Flow

  • Raw Materials: Selection of high-quality HDPE compound.
  • Extrusion Molding:Using imported or high-precision extruders, the raw material is heated, melted, and extruded through specific molds to form pipes in a single step.
  • Key Component Production:Components like electrofusion couplers are manufactured on automated production lines to ensure high precision and qualification rates.
  • Quality Control: Full-process online monitoring ensures stable pipe dimensions and compliant performance.

8.Packaging and Delivery

  • Packaging: Typically secured with stretch film wrapping or palletized to prevent rolling and collision during transport. Pipe ends may be fitted with protective caps.
  • Delivery: Professional manufacturers provide one-stop services from design and production to logistics and distribution, and can arrange for technical personnel to provide installation guidance.

9.Sales Service

  • Pre-Sales:Provides project research, technical consultation, and system solution design.
  • In-Sales:Provides installation technical guidance and training, with on-site supervision if necessary.
  • After-Sales:Establishes project files, conducts regular follow-ups, and offers 24-hour emergency response services.

10.Company Strengths

  • Positioning & Solutions:Transitioned from a pipe manufacturer to a comprehensive roof drainage solution provider.
  • Technology & R&D: Holds multiple patents and participates in or leads the development of industry standards.
  • Production & Quality:Equipped with intelligent production lines enabling high-precision automated manufacturing, resulting in high product qualification rates.
  • Projects & Market:Products have been successfully applied in construction projects and are exported to international markets.
  • Specialization: Expert in roof siphon rainwater drainage systems, providing one-stop services from design and production to installation guidance.
  • Available Documentation:Complete product catalogs, technical specifications (including all parameters), test reports, installation method guides, project case studies, and after-sales service policies are available upon request.
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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