D-Rex

Double-Walled Corrugated Underground Drainage Pipes

D-Rex Corrugated Pipes are a revolutionary solution for underground drainage systems in India. This system is introduced as the first Double Wall Corrugated (DWC) pipes in India. These pipes are made from high-quality PE/PP material, offering exceptional strength and flexibility. The smooth inner surface facilitates the efficient flow of liquids and slurry, preventing blockages and the build-up of dirt over time.

  • Offers excellent resistance to external pressure
  • Can handle heavy loads without getting damaged
  • Unaffected by vehicular traffic, remaining intact under high-pressure conditions
  • Flexible design allows easy installation in curved paths
  • Suitable for residential, municipal and industrial drainage systems
  • Innovative design and superior material
  • Efficient and sustainable drainage performance

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    Features & Benefits

    • Eco-Friendly
    • Long Life & Cost Effective
    • Light weight and easy to handle
    • Flexible and Fatigue Resistant
    • Excellent Load Bearing Capacity & Stiffness
    • High Hazen William’s Coefficient ‘C’ – 150
    • Excellent Chemical, Corrosion & Abrasion Resistance
    • Suitable for aggressive climatic conditions
    • Corrugated Profile gives excellent soil bonding
    • Telescopic transportation possible
    • Easy & Quick Installation with no need of heavy machinery
    • Watertight Joints and Maintenance Free
    • Rodent repellence (on-demand) – to avoid rodent attacks
    • Perfect Hydraulic Properties with Low Manning’s Roughness Coefficient ‘n’ – 0.009

    Fields of Application

    • Culvert and Highway Drainage
    • Effluent/Wastewater Transport Network
    • Rainwater Collection Network
    • Storm water Drainage Network
    • Sewerage and Drainage, Collectors for Sub-Surface Drainage

    Standards & Specifications

    • IS 16098 (Part-2)
    • ISO: 21138 (Part-3)
    • BS EN 13476 (Part-3)

    Available Sizes

    • Pipe DN ID 75mm to 800mm
    • Type – Regular & Rodent Repellent
    • Plain End & In-line Socketed End
    • Pipe Stifness Classes: SN 4 (4 kN/m2 ) & SN 8 (8 kN/m2)

    FAQs

    Load-bearing capacity is measured in stiffness class (SN) class. SN 2 is equivalent to 200 kg/m2 of load. D-Rex pipes are available in SN4 & SN8 corresponding to 400 kg/m2 (4000 n/m2) & 800 kg/m2 (8000 n/m2) load bearing capacity, respectively.

    As per the standard, D-Rex pipes can be laid up to a depth of 6 m. However, these depth values depend on soil type and other factors related to the project.

    As per the standard, the minimum Depth should be more than 0.8 m. However, it is possible to please consult the technical department.

    As per the standard, D-Rex pipes can be laid up to a depth of 6 m. However, these depth values depend on soil type and other factors related to the project. The installation depth may vary based on project planning, but load-bearing strength depends on the density of dynamic and static load elements, such as vehicular traffic and/or structural loads on the pipes.

    The rubber ring is made of EPDM rubber.

    DWC D-Rex pipes are designed for non-pressure underground drainage applications only. Not to be exposed to open or above-ground level. So, it is not advisable to use it in a basement parking in a suspended position.

    If pipes are damaged or punctured, the punctured portion, once identified, should be cut out and replaced with a new portion by using connecting couplers on both sides.

    Yes, rodding damages any type of plastic pipes. Hence, for D-Rex corrugated pipes, it is recommended that, instead of rodding, the hydro jetting mechanism be considered.

    Connections between different MOCS in sewerage and drainage network projects are carried out by the insertion of a constructed or pre-fabricated manhole or chamber. However, in case such construction or addition poses a challenge, then the use of repairing couplers can be considered.

    Yes. Damage due to pests can be a possibility. However, if such a possibility is envisaged, ASTRAL D-Rex pipes with anti-rodent properties can be provided upon demand. However, it is to be noted that this does not eliminate the possibility of damage, but limits the extent of it. The service life of D-Rex pipes is more than 50 years.

    Pipes are chemically inert. For more details, please contact Astral. The Astral D-Rex pipes will be provided upon demand.

    As per the standard references, the service life of D-Rex pipes is more than 50 years.

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    Choosing D-Rex pipes for your drainage needs ensures superior performance, cost-efficiency and sustainability. These corrugated pipes are lightweight and flexible, which makes them easy to handle and install. Unlike conventional RCC pipes, which are prone to breakage and require more maintenance, D-Rex pipes are built to last. Their chemical resistance ensures that they can withstand exposure to various environmental factors without degrading, making them an ideal solution for underground drainage pipe systems.

    The smooth internal surface enhances flow characteristics, reducing friction and making D-Rex pipes more efficient than traditional piping systems. Whether you’re dealing with stormwater drainage, agricultural runoff, or municipal sewer systems, D-Rex pipes are designed to provide high hydraulic performance and reliable water-tight joints.

    Moreover, the rodent-repellent additives incorporated into these pipes prevent pests from causing damage, ensuring long-term durability. They are available in SN4 and SN8 classes to cater to different load requirements and their ability to resist external pressure and deformations makes them perfect for various applications in both urban and rural areas.

    Investing in D-Rex plastic drainage pipes not only ensures a reliable drainage system but also offers significant savings in installation and maintenance costs. Their eco-friendly design, long life and ease of installation make them a top choice for modern drainage projects.

    Description

    Double-Walled Corrugated Underground Drainage Pipes

    D-Rex Corrugated Pipes are a revolutionary solution for underground drainage systems in India. This system is introduced as the first Double Wall Corrugated (DWC) pipes in India. These pipes are made from high-quality PE/PP material, offering exceptional strength and flexibility. The smooth inner surface facilitates the efficient flow of liquids and slurry, preventing blockages and the build-up of dirt over time.

    • Offers excellent resistance to external pressure
    • Can handle heavy loads without getting damaged
    • Unaffected by vehicular traffic, remaining intact under high-pressure conditions
    • Flexible design allows easy installation in curved paths
    • Suitable for residential, municipal and industrial drainage systems
    • Innovative design and superior material
    • Efficient and sustainable drainage performance

    Other Products

    D-Rex Double Wall Corrugated (DWC) pipes by Astral are a revolutionary solution for underground drainage systems, combining advanced engineering with robust material properties. These plastic drainage pipes are made from PE/PP (Polyethylene/Polypropylene) materials, ensuring high chemical resistance, abrasion resistance and flexibility, making them ideal for diverse environmental conditions. With their double-wall construction, these pipes combine the best of both worlds: a smooth inner surface that promotes effective flow and a corrugated outer surface that provides strength and durability.

    Key Properties of Corrugated Drainage Pipes

    1. Smooth Inner Surface

    The smooth inner surface of D-Rex pipes helps in reducing friction, which facilitates the efficient flow of liquids and prevents blockages. This smooth design ensures that slurry or wastewater can flow freely, without the risk of accumulation or sedimentation within the pipe, which is a common issue with traditional pipes.

    2. Corrugated Outer Surface

    The corrugated exterior gives the pipes superior strength and load-bearing capacity, allowing them to withstand significant external pressure without losing integrity. The DWC design ensures that these pipes remain intact under the weight of soil and vehicles above them, which makes them an ideal choice for high-traffic areas and applications requiring extra strength.

    3. Flexibility

    Unlike rigid pipes, D-Rex pipes offer remarkable flexibility, enabling them to bend and adapt to curved paths or uneven terrains during installation. This flexibility reduces the need for complex fittings and allows for quicker and easier installation, making it a cost-effective choice for contractors.

    4. Rodent-Repellent

    The addition of anti-rodent properties to D-Rex pipes makes them a great option for underground installations. Rodents, which can cause damage to traditional pipes, are deterred by the special additives in these pipes, ensuring their long-term integrity.

    5. Environmental Resistance

    Manufactured from PE/PP, D-Rex pipes are resistant to many common chemicals found in sewage and stormwater drainage systems. This resistance extends the pipes’ lifespan and ensures that they can handle various environmental and chemical challenges, making them suitable for both residential and industrial applications.

    Features of Double-Walled Corrugated Drainage Pipes

    1. Durability and Longevity

    One of the standout features of D-Rex pipes is their exceptional lifespan. With proper installation and minimal maintenance, these pipes can last between 50 to 100 years, providing reliable service in even the harshest conditions. Their durability reduces the need for replacements and maintenance, offering long-term cost savings.

    2. Cost-Effective

    Despite their superior strength and longevity, D-Rex pipes are cost-effective, primarily due to their lightweight nature, which makes transportation and installation easier. This results in lower labour and equipment costs. Moreover, the minimal maintenance required throughout the pipes’ lifespan makes them a preferred choice for both small and large-scale projects.

    3. Easy Installation

    D-Rex pipes are lightweight and flexible, making them quick and easy to install compared to traditional concrete pipes. Their ability to be laid in curved paths without the need for special fittings adds another level of convenience for installers.

    4. Chemical Resistance

    These pipes are highly resistant to a wide range of chemicals, making them ideal for wastewater and effluent transport. Whether it’s sewage, stormwater, or industrial effluent, D-Rex pipes can handle the harshest conditions without the risk of degradation.

    Applications of Double-Walled Corrugated Drainage Pipes

    The versatility of D-Rex corrugated pipes makes them suitable for a broad range of applications, including but not limited to:

    1. Municipal Sewer Systems

    D-Rex pipes are widely used in municipal sewer systems to efficiently manage wastewater and sewage in residential, commercial and industrial areas. Their ability to withstand pressure and high loads makes them perfect for densely populated urban areas.

    2. Stormwater Drainage

    Stormwater drainage systems rely on D-Rex pipes to collect and transport rainwater runoff from roads, parking lots and flood-prone areas. The ability to handle both large volumes of water and varying environmental conditions makes these pipes an ideal choice for stormwater management.

    3. Road and Highway Drainage

    For road and highway drainage systems, D-Rex pipes help manage water flow to prevent damage to the pavement and ensure safe driving conditions. The load-bearing capacity of these pipes ensures that they are reliable, even under the weight of heavy vehicles.

    4. Industrial Drainage

    These pipes are also used in industrial settings to transport effluent or wastewater. Their ability to resist chemical degradation makes them suitable for industries dealing with harsh chemicals or by-products.

    With their exceptional properties, D-Rex pipes provide a sustainable, cost-efficient and reliable solution for modern underground drainage systems. Whether you are constructing a new infrastructure or upgrading an existing system, D-Rex pipes deliver the performance

    needed for long-term success. Their versatility, durability and ease of installation make them the preferred choice for contractors, municipalities and industries across various sectors.


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