Jul . 28, 2025 13:01 Back to list

DN500 HDPE Double Wall Corrugated Drain Pipes for Efficient Drainage

In modern civil engineering, industrial pipeline systems, and municipal infrastructure, DN500 HDPE double wall corrugated drain pipes have emerged as the preferred solution for large-scale drainage and sewage projects. This article provides an in-depth exploration of the industry trends, technical parameters, manufacturing process, application scenarios, and competitive benchmarking of DN500 HDPE double wall corrugated drain pipes, backed with authoritative data and visual analytics.

State-of-the-art DN500 HDPE double wall corrugated drain pipes at production facility

1. Industry Trends: The Rise of HDPE Double Wall Corrugated Pipes

The global market for HDPE (High Density Polyethylene) double wall corrugated pipes is projected to witness a CAGR of 5.9% (2021–2026), reaching an estimated USD 6.7 billion by 2026^[1]. Particularly in the DN500 diameter segment, demand has surged due to the increasing need for efficient stormwater and wastewater solutions in urban and industrial environments.

China, Europe, and North America are the leading markets, driven by infrastructural upgrades and government investments.
Compliance with ISO 21138 and EN 13476 standards has become the norm for project acceptance.
Energy efficiency, environmental regulations, recyclability, and corrosion resistance set HDPE apart from traditional concrete or metal pipes.

2. Product Technical Parameters & Specifications

Core Specification Table for DN500 HDPE Double Wall Corrugated Drain Pipes

Parameter	Specification	Standard/Reference
Nominal Diameter	DN500 (500 mm / 19.7 in)	ISO 21138-1:2020
Wall Structure	Double Wall Corrugated (Outer corrugated, inner smooth)	EN 13476-3
Material	High Density Polyethylene (HDPE, PE100 grade)	ISO 4427
Ring Stiffness (SN)	SN8 / SN10 kN/m²	EN ISO 9969
Pipe Length	6 m / 12 m (Customizable)	/
Joint Type	Integrated Socket & Rubber Ring (Push-fit)	EN 681-1
Color	Black (outer), Blue/Grey/White (inner)	/
Short-term Hydraulic Pressure Resistance	≥ 0.25 MPa (36.25 PSI)	ISO 21138
Long-term Service Life	≥ 50 years	ISO/TR 9080

Technical Highlight: Why HDPE Double Wall Corrugated Pipes?

Superior Flexural Performance: The corrugated external wall provides robust ring stiffness, outperforming concrete and UPVC alternatives for buried installations.
Excellent Corrosion Resistance: HDPE resists acidic, alkaline, and saline environments, meeting stringent ISO 4427 standards.
Hydraulic Efficiency: The smooth internal wall minimizes friction loss (Manning’s Coefficient n≈0.009), ensuring high flow rates and reduced sedimentation.
Lightweight and Easy Handling: At roughly one-seventh the weight of traditional concrete pipes, reducing transport and installation costs by 25–40%.

DN500 HDPE double wall corrugated drain pipes installation

Real-world installation of DN500 HDPE double wall corrugated drain pipes

3. Manufacturing Process Flow Chart: DN500 HDPE Double Wall Corrugated Drain Pipes

Manufacturing Process Overview

Raw Material Selection:
Use of prime PE100/PE80 resin, additive mixing (UV stabilizers, antioxidants). [ISO 4427]
Extrusion & Corrugation:
Twin-screw extruders process the melt; dies shape the outer corrugated and inner smooth layers in a co-extrusion process.
→Corrugator molds integrate continuous corrugation—ensuring wall uniformity.
Vacuum Cooling:
Rapid cooling sets the pipe structure while maintaining dimensional accuracy.
Cutting & Socketing:
Automated cutting to length; formation of integral sockets for push-fit connections.
Quality Control & Hydrostatic Tests:
Rigorous inspection against ISO 21138
✓ Performs ring stiffness, impact, hydrostatic pressure, and leak tests.
Packing & Dispatch:
Final product marking, stacking, packaging for shipment worldwide.

DN500 HDPE Double Wall Corrugated Drain Pipes for Efficient Drainage

* Example Animated Process: HDPE Corrugated Pipe Production (Video)

4. Competitive Benchmark: DN500 HDPE vs. Other Pipe Systems

Attribute	DN500 HDPE Double Wall Corrugated	Concrete	UPVC	Ductile Iron
Stiffness (SN, kN/m²)	8.0 / 10.0	10–16	4.0	10–18
Corrosion Resistance	Excellent	Poor	Moderate	Poor
Life Expectancy	≥ 50 years	25–35 years	20–30 years	30–50 years
Installation Speed	High	Slow	Moderate	Slow
Weight	Lightweight	Very Heavy	Light	Heavy
Certifications	ISO, EN, CE, WRAS	ISO	EN	ISO
Field Connection	Push-fit Rubber Socket	Cement Joint	Adhesive Socket	Rubber Gasket

DN500 HDPE double wall corrugated drain pipes application

Urban drainage application with DN500 HDPE double wall corrugated drain pipes

5. Tailored Solutions & Customization

Custom Pipe Length & Color: Standard lengths are 6m or 12m, but special projects may request 3m–13m. Interior wall color can be blue, gray, or white for CCTV inspection.
Enhanced Ring Stiffness Grades: Custom stiffness (SN12, SN16) available for deeper burial or heavy load.
Joint Systems: Select between one-piece sockets and integrated double-lip rubber gaskets for rapid field assembly.
Perforated Options: For subsoil drainage/landscape applications, pipes can be supplied with factory-made perforations.
Certifications: Available with ISO 21138, CE, WRAS, EN 13476 certificates and third-party factory inspection reports upon request.

6. Application Scenarios: Real-World Case Studies

Case 1: Mega Stormwater Drainage – Tianjin Eco-City, China

Large-scale urban flood mitigation project utilizing DN500 HDPE double wall corrugated drain pipes for a 7km network. Result: Installation speed increased by 38%, maintenance costs down by 51% over 5 years versus concrete pipes.

Flow performance: up to 1,120 L/s at peak event (tested source)
Zero corrosion/deformation after major flooding events (2021, 2023)

Case 2: Industrial Zone Sewer Retrofit – Duisburg, Germany

Replacement of failing clay sewers with DN500 HDPE double wall corrugated drain pipes (SN10). Integration with factory process water systems and compliance with ISO/EN standards enabled rapid approval and minimal operational disruption.

Case 3: Petrochemical Plant Effluent System – Gulf Coast, USA

Custom SN12 HDPE pipes supplied with chemical-resistant inner layer and integrated joint detectors. Supported by 20-year manufacturer warranty—no failure or significant wear observed to date.

7. Company Strengths and Authoritative Accreditations

Manufacturing Excellence: 15 years of experience, over 60,000 tons annual pipe output, advanced European extrusion and corrugator lines.
Quality Assurance: In-house laboratories, ISO 9001 certified processes, and compliance with ISO 21138, EN 13476-3, and WRAS standards.
Global Partnerships: Clients in municipal engineering, petrochemicals, metallurgy, and real estate; projects completed in 29+ countries.
Warranty & Logistics: 50-year product performance warranty, standard lead time 7–14 days, comprehensive technical support and post-sale service systems.

8. FAQs: Technical Terms & Expert Answers

QWhat does “SN10” mean in DN500 HDPE double wall corrugated drain pipes specifications?

SN10 refers to a ring stiffness of 10 kN/m², indicating superior resistance to external loads and soil pressure, as per EN ISO 9969 testing.

QWhat is the typical “Service Life” for these pipes and what standard governs this?

Certified service life is ≥ 50 years based on accelerated aging and long-term hydrostatic pressure testing, following ISO/TR 9080 guidelines.

QWhich “Material Grade” is used and why is PE100 preferred?

PE100 HDPE resin offers high molecular weight, enhanced toughness, environmental stress crack resistance, and low creep, ensuring pipe integrity over decades.

QCan DN500 HDPE double wall corrugated drain pipes be used for gravity and pressurized systems?

Primarily designed for gravity drainage/sewer systems; limited use in low-pressure applications (≤0.25MPa). For higher pressures, consider solid wall/structured wall HDPE pressure pipes.

QWhat joint type is recommended for rapid, leak-proof installation?

The integrated socket with double-lip EPDM rubber ring ensures a reliable, water-tight connection meeting EN 681-1 testing (≤ 0.1 bar water leakage per 10 min).

QAre there standardized “Inspection & Test Reports” available?

Each production batch is delivered with full ISO 21138-3, EN/CE-compliant test reports (ring stiffness, impact, hydrostatic, dimensional accuracy, and joint integrity).

QWhat installation standards should be followed?

Installation should comply with ASTM D2321 and relevant local codes (bedding, compaction, backfilling). Manufacturer support includes detailed installation manuals and on-site training.

9. Delivery, Warranty, and Support

Production Lead Time: 7–18 days for standard orders; expedited service for urgent projects.
Warranty: 50 years standard performance warranty; anti-corrosion guarantee included.
Technical Support: Pre-sales consulting, full documentation, and 7x24h engineer hotline available.
Logistics: Global delivery (FOB/CIF/DDP available), robust packaging to prevent shipping damage.
OEM/Custom Branding: Support for custom logos and private label packaging.
On-site Training: Guidance and support for large municipal or industrial projects on request.

10. Reference & Industry Citations

[1] MarketsandMarkets (2022). "Corrugated Pipes Market by Type (Single Wall & Double Wall), Application (Drainage & Sewerage, Cable Protection), Material (HDPE, PVC, Others), End-User (Municipal, Industrial, Agricultural), and Region – Global Forecast to 2026." Read Report
[2] "Performance evaluation of HDPE double-wall corrugated pipes under various loading conditions", Water Supply, 19 (8):2363-2374, IWA Publishing, Read Study
[3] International Organization for Standardization, ISO 21138-3:2007: "Plastics piping systems for non-pressure underground drainage and sewerage — Structured-wall pipes and fittings".
[4] Plastic Pipe Institute, Industry Resources
[5] Industry Forum: "HDPE Corrugated Pipes Performance & Market Analysis 2023" (Forum Discussion)