Introduction Why Astral D-Rex Features & Benefits Additional Details

D-Rex is an innovative product described as a structured wall piping system of PE/PP with smooth internal and corrugated (profiled) external surface. The corrugated (profiled) external surface of the D-Rex pipes gives the product excellent ring stiffness (load bearing capacity). Unlike plain pipes, D-Rex pipes do not deform under vehicular traffic load. Furthermore, since these pipes are moderately flexible, they can be aligned comfortably even in gradually bending paths.

 The inner wall, which is fused with the outer wall, is smooth and facilitates laminar flow of liquids/slurry. This results in lesser possibilities of pipe clogging, deposition of debris in the pipe path etc.

 D-Rex stands high as compared to the conventional options owing to its advantages and cost-economic viability, and is a popular product among the end users and contractors.


Why Astral D-Rex

  • Introduced D-Rex for the first time in India
    Astral has played a key role in introduction of a variety of new products in the Indian Piping Industry with the sole motive of encouraging the application of superior user friendly and economic solutions. Double Wall Corrugated (DWC) pipes have been introduced first in India by the company.

  • Highest number of Approvals
    D-Rex is approved in most of the Government and Private organisations for Sewerage application. 

  • State of the Art manufacturing
    Astral is equipped with state of art manufacturing facilities at Sangli, Sitarganj, Hosur and Ghiloth plants. High speed and accurate extruders and injection moulding machines including innovative manufacturing techniques being used to manufacture the ultra modern,errorless ASTRAL D-Rex pipes and fittings. The manufacturing systems installed at Astral are extremely advanced and based on state-of-the-art German equipment and extrusion process technology. 

  • Widest product range
    Astral has a wide variety of sizes ranging from 10.0 cm (100 mm) to 80.0 cm (800 mm) diameter, SN 4 & SN 8 stiffness classes. Hence you can meet any requirement with this widest range of DWC pipes.

  • Total backward integration
    All of Astral’s DWC Pipes and Fittings are made from DWC Compound which is manufactured and controlled by Astral at every stage of the process. Also German corrugation technology provides highest stiffness to products. This backward integration helps us consistently maintain the highest quality for all pipes and fittings.

  •  Skill Development & training programme for installers
    Astral provides training to persons who install DWC pipes and fittings throughout the year by updating them about modern installation techniques and how to make installations more effectively and professionally.


Features & Benefits

Features and Components
  • Lower Manning’s Roughness Co-efficient (n) (0.009)
  • Higher Hazen – Williams Co-efficient (C) (150)
  • Excellent abrasion resistance
  • Chemically inert, and has excellent anti-corrosive properties, making it resistant to crown corrosion
  • Can be used in aggressive climatic conditions
  • Prohibits growth of biologicals on the inner surface
  • Profiled external surface supports better bonding with soil
Salient Features
  • Excellent load bearing capacity
  • Light weight
  • D-Rex DWC Pipes are flexible and fatigue resistant
  • Simple to stack
  • Telescopic transportation without damages
  • Lesser manpower / labor requirement
  • No need of heavy machinery for conveyance
Standards & Specifications

 IS 16098 (Part 2)

Structured-Wall Plastics Piping Systems for non-pressure drainage and sewerage –specification

Part 2 -: Pipes and fittings with non–smooth external surface, Type B

ISO 21138 (Part 3)

Plastics piping systems for non-pressure underground drainage and sewerage — Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE) — Part 3: Pipes and fittings with non-smooth external surface, Type B

BS EN 13476 (Part 3)

Plastics piping systems for non-pressure underground drainage and sewerage. Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE). Specifications for pipes and fittings with smooth internal and profiled external surface and the system, Type B.

Additional Details


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