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Zhengzhou, Henan, China
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HDPE DWC Pipe for Drainage and Sewer Systems
JQ PIPE manufactures HDPE double wall corrugated pipes for non-pressure underground drainage, sewer and stormwater systems. The corrugated outer wall provides ring stiffness against external loads, while the smooth inner wall supports efficient gravity flow. SN8 is our primary option for demanding underground projects, with SN4 also available according to project conditions.
- Diameter: DN110-1200mm.
- Ring Stiffness: SN8 (SN4 available upon request)
- Material: High-Density Polyethylene
- Length: 6m.
- Structure: Corrugated outer wall and smooth inner wall
- Connection: Socket with rubber sealing ring
- Main Application: Non-pressure drainage and sewer systems
- Delivery: Usually 7–10 days, depending on order quantity.
Key Benefits of HDPE DWC Pipe
Designed for reliable underground drainage with strong structural performance, smooth flow and efficient installation.
High Ring Stiffness
Corrugated outer walls provide support for underground installation and external loads.
Smooth Inner Wall
The smooth inner surface supports efficient flow and reduces drainage resistance.
Corrosion Resistant
HDPE material resists rust, moisture and common underground chemical conditions.
Easy Installation
Lightweight pipe sections reduce transportation, lifting and installation requirements.
HDPE Double Wall Corrugated Pipe Structure
HDPE double wall corrugated pipe features a unique dual-wall structure with a corrugated outer wall and a smooth inner wall. The outer wall provides high ring stiffness and resistance to external loads, while the smooth inner wall ensures efficient flow performance in underground drainage systems.
Corrugated Outer Wall
The corrugated outer wall improves ring stiffness and resists external loads in buried applications.
Smooth Inner Wall
The smooth inner surface reduces flow resistance and supports efficient drainage and sewage discharge.
Double Wall Design
The integrated double-wall structure combines lightweight handling with reliable structural performance.
Socket Connection
The pipe socket and rubber sealing ring provide a secure and watertight connection for installation.
HDPE DWC Pipe Sizes and Specifications
JQ PIPE supplies HDPE DWC pipes from DN110 to DN1200 mm. The following dimensions are based on the DN/OD system, and all values are shown in millimeters. Please confirm the required dimensional system, ring stiffness and applicable project standard before ordering.
| DN/OD | Min. Average Outer Diameter | Max. Average Outer Diameter | Min. Average Inner Diameter | Min. Laminated Wall Thickness | Min. Inner Wall Thickness | Min. Outer Wall Thickness | Min. Connection Length |
|---|---|---|---|---|---|---|---|
| 110 | 109.4 | 110.4 | 90 | 1 | 0.8 | 0.7 | 32 |
| 125 | 124.3 | 125.4 | 105 | 1.1 | 1 | 0.8 | 35 |
| 160 | 159.1 | 160.5 | 134 | 1.2 | 1 | 0.8 | 42 |
| 200 | 198.8 | 200.6 | 167 | 1.4 | 1.1 | 0.9 | 50 |
| 250 | 248.5 | 250.8 | 209 | 1.7 | 1.4 | 0.9 | 55 |
| 315 | 313.2 | 316 | 263 | 1.9 | 1.6 | 1 | 62 |
| 400 | 397.6 | 401.2 | 335 | 2.3 | 2 | 1.2 | 70 |
| 500 | 497 | 501.5 | 418 | 2.8 | 2.8 | 1.7 | 80 |
| 630 | 626.3 | 631.9 | 527 | 3.3 | 3.3 | 2 | 93 |
| 800 | 795.2 | 802.4 | 669 | 4.1 | 4.1 | 2.5 | 110 |
| 1000 | 994 | 1003 | 837 | 5 | 5 | 3 | 130 |
| 1200 | 1192.8 | 1203.6 | 1005 | 5 | 5 | 3 | 150 |
SN4 vs SN8 HDPE DWC Pipe
SN ratings indicate the pipe’s ring stiffness and resistance to external deformation. They are not internal pressure ratings. SN8 provides higher ring stiffness than SN4 and is frequently selected for municipal, road and other demanding underground drainage projects.
| Comparison | SN8 DWC Pipe | SN4 DWC Pipe |
|---|---|---|
| Nominal Ring Stiffness | 8 kN/m² | 4 kN/m² |
| External Load Resistance | Higher resistance to external loads and deformation | Moderate resistance under lighter external loads |
| Soil Load Conditions | Better suited to demanding soil and backfill conditions | Suitable for less demanding installation conditions |
| Traffic Load | Commonly selected for roads and traffic-loaded areas | More suitable for areas with limited surface loading |
| Typical Applications | Municipal drainage, sewer systems, road drainage and industrial projects | General drainage, landscaping and light-load areas |
| Installation Requirements | Proper bedding and compacted backfill are still required | Installation quality is especially important because of lower ring stiffness |
| Project Suitability | Frequently selected for larger and more demanding buried projects | Selected when engineering calculations and site conditions permit |
| JQ PIPE Supply | Primary and commonly requested option | Available according to project requirements |
SN8 is the more commonly requested option for projects requiring higher resistance to soil and traffic loads. However, the final selection should consider burial depth, soil conditions, groundwater, traffic load, trench width, bedding and backfill compaction. Contact JQ PIPE with your project details for pipe selection support.
HDPE Double Wall Corrugated Pipe Applications
HDPE double wall corrugated pipes are designed primarily for non-pressure underground drainage and sewer systems that require corrosion resistance, ring stiffness and efficient gravity flow.
- 1. HDPE double wall corrugated pipes can be used in municipal drainage, urban drain piping system.
- 2. DWC sewer pipe can be used in apartments, residential district underground buried sewage drainage.
- 3. Double-wall corrugated pipe are suitable for highway embedded pipeline, golf course underground water seepage pipe network.
- 4. HDPE corrugated pipe can be used in chemical industry, mining used in fluid transport and ventilation, etc.
- 5. HDPE double wall corrugated pipes can be used for irrigation water, draining water projects, etc.
- 6. DWC drainage pipe can be used for underground pipeline protection and communication cable protective pipe, etc.
How to Connect HDPE DWC Pipe?
HDPE DWC pipes are commonly joined using a socket and rubber sealing ring. Correct cleaning, alignment and insertion are important for achieving a reliable watertight joint.
- 1. Clean the socket, spigot and rubber sealing ring.
- 2. Install the sealing ring in the correct corrugation.
- 3. Apply approved lubricant to the jointing surface.
- 4. Align both pipe sections on the same centerline.
- 5. Push them into the socket to the marked depth.
- 6. Check the joint alignment and sealing-ring position.
Quality Control
Quality Inspection Process
- Environmentally friendly raw materials are recyclable
- Material chemical composition analysis and physical property test
- Each process must be inspected and qualified before continuing
- Thickness and weight test of each product
- Each pipe is not put into storage until after final inspection.
Certificate Showcase
Why Buy HDPE DWC Pipe from JQ PIPE?
Project-Based Selection
We help buyers confirm pipe diameter, SN class, application and dimensional requirements before quotation.
Complete Technical Information
Dimensions, available test information and connection details can be provided for project evaluation.
Inspection Support
Factory inspection and third-party inspection can be arranged according to order requirements.
Export Supply Experience
We support international projects with container loading, shipping documents and destination-port quotations.
FAQs about HDPE DWC Pipe
1. What is the HDPE DWC pipe?
HDPE DWC pipe is a non-pressure structured-wall pipe with a corrugated outer wall and a smooth inner wall. It is mainly used for underground drainage, sewer and stormwater systems.
2. Is SN8 better than SN4?
SN8 provides higher ring stiffness, but the correct choice depends on soil conditions, burial depth, traffic load, groundwater and installation quality. SN8 is commonly requested for more demanding underground projects.
3. Can HDPE DWC pipe carry pressurized water?
Standard HDPE DWC pipe is intended for non-pressure gravity drainage. Pressure-water systems normally require pressure-rated solid-wall HDPE pipe.
4. What sizes do you supply?
JQ PIPE supplies HDPE DWC pipes from DN110 to DN1200 mm. Buyers should confirm whether the project requires DN/OD or DN/ID dimensions.
5. How is HDPE DWC pipe connected?
HDPE DWC pipe is commonly connected using a socket and rubber sealing ring. The joint surfaces must be cleaned, lubricated and correctly aligned before insertion.
6. Can you provide fittings and rubber sealing rings?
Compatible rubber sealing rings and available fittings can be supplied according to pipe diameter and connection requirements.
Request an HDPE DWC Pipe Quotation
Tell us your required pipe diameter, SN class, quantity and destination port. Our team will confirm the available specifications, loading plan and factory quotation.