Hebeish Group offers two underground (mainline) profile pipes, , HDPE Double Wall Corrugated Pipe and Structured Wall Pipes . The main application areas for these products are used in transporting liquids by gravity such as:
- Sewage system.
- Rain drainage system.
- Efficient water transportation system.
- Industrial waste water system.
Structural Design
- The first thing to do when dealing with sewer pipes is to distinguish between rigid pipes and flexible pipes.
- Rigid pipes are pipes whose ring section cannot undergo horizontal or vertical deflection without the pipe being damaged.
- However, flexible pipes are pipes where an external stress may cause deflection of the ring section >3% without damages.
- The deflection, whether on a short or a long term, can reach higher values without damages or signs of failure on the pipe structure.
- The key parameter of flexible pipes is ring stiffness, which depends on both geometrical fat (moment of inertia of the wall) and on the characteristics of the material (module of the elasticity).
Egypt's pioneer in HDPE pipe since the 1990s.
A family business since 1964, Hebeish Group is Egypt's pioneer in thermoplastic pipes and hoses — serving pressure, drainage, cable protection and automotive cabling applications across five factories and 15+ production lines. PolyGrande is the Hebeish Group brand dedicated to HDPE structured wall pipes for gravity, sewerage, drainage and stormwater applications.
Three ways we deliver infrastructure.
HDPE Structured Wall Pipes
Sewerage · Drainage · Stormwater · DN500-DN1600 in Egypt · Up to DN3200 via mobile factory and/or partnership
Fabrications & Custom Fittings
Bends · Manholes · Inspection chambers · Tanks · Backdrops · Built to project drawings
Site and Technical Services
Pipeline installation · Extrusion welding · Site supervision · EN 1610 acceptance testing
Built to a standard.
Designed to outlast.
Every pipe leaves our factory inspected, certified and traceable – manufactured to DIN 16961 and EN 13476 using virgin PE100 HDPE. The result is a pipeline with a guaranteed 100-year service life.
100%
Fully Inspected
Every pipe dimensionally checked and verified. No sampling, no exceptions.
100yr
Service Life
HDPE does not corrode. Zero chemical degradation in standard sewerage conditions.
DIN 16961
EN 13476
Dual Standard
Both international norms for structured wall HDPE pipe, met on every batch.
Virgin
PE100
Raw Material
Certified virgin compound only – no recycled blends, fully traceable batch to site.
Extrusion Welding
A continuous bead of molten HDPE fuses the pipe ends together, creating a monolithic joint as strong as the pipe wall itself.
- Permanent, fully restrained joint
- DN 900 - DN 3200, all stiffness classes
- Per DVS 2207, tested to EN 1610
Socket & Gasket
The spigot end of one pipe is pushed into the socket of the next, with a custom-made rubber gasket creating a watertight seal.
- Fast on-site assembly, no heat required
- DN 500 - DN 1200, standard and deep socket
- Custom rubber gasket, tested to EN 1610
Screw Connection
A threaded coupling ring engages with matching pipe ends to create a mechanical joint for access, maintenance, or special system details.
- Mechanical joint, removable and reusable
- Suited for maintenance shafts and access points
- Available across full diameter range
Three ways to join.
PolyGrande pipes are available with three connection methods to suit site conditions, diameter, and project specification. All joints are tested to EN 1610 for leak-free performance.
Technical documents
and certificates.
Installation Guidelines
Reference guide for handling, bedding, jointing, backfill, and acceptance checks for PolyGrande HDPE structured wall pipe installation.
Product Catalog
Full PolyGrande HDPE structured wall pipe range, specifications, dimensions, and standards.
Mobile Factory Brochure
Technical and commercial overview of the on-site mobile pipe production solution.
Certifications
Current ISO 9001, 14001, and 45001 certificates for Hebeish Group manufacturing operations.
HDPE Double Wall Corrugated
HDPE Double wall corrugated pipes have a smooth – surfaced inner wall (colored yellow) surrounded by a profiled outer wall (colored black). The corrugated outer wall provides optimum strength under compressive loading form covering layers and traffic (High Ring Stiffness). The bright yellow color of the inner pipe also improves visibility in TV inspection, providing optimum, conditions for acceptance
Characteristics include:
- High Protection against corrosion and resistance to chemicals
- Easy Joining Methods
- Easy Repair and Maintenance
- Long Service Life
- Efficient Flow of Fluids
- Flexible
Main Applications
HDPE Corrugated pipes are used in transporting liquids by gravity such as :
- Sewage Systems
- Rain drainage pipes
- Efficient water transportation system
- Industrial wastewater system.
Pipe Specifications
| Inner Diameter | A | B | C | D | E | F | G | H | I | J |
|---|---|---|---|---|---|---|---|---|---|---|
| Ø 150 | 150 | 181 | 187 | 197.4 | 2.3 | 1.1 | 1.2 | 2.5 | 67.3 | 19.08 |
| Ø 200 | 200 | 233 | 242 | 248 | 2.5 | 2.1 | 1.9 | 3 | 75 | 28 |
| Ø 250 | 250 | 291 | 303 | 310 | 3.0 | 2.3 | 2.1 | 4 | 85 | 33 |
| Ø 300 | 300 | 353 | 367 | 375 | 3.5 | 2.5 | 2.3 | 5 | 108 | 38.7 |
| Ø 400 | 400 | 460 | 476 | 485 | 4.5 | 2.8 | 2.6 | 6 | 142 | 51.4 |
- Manufactures according to DIN 16961 – 16566.
- Ring thickness: SN8.
- Pipes length: 12m.
Installation
Using electrometric seal ring spigot jointing, the connection and installation is as follows:
1. Clean pipe surface
2. Install rubber ring
3. Spread Lubricant
4. Connect Pipe
5. Insert pipe
Trench Cross-section of Corrugated Pipe
- Final Backfill: Decompressed area of soil (cross-sections are excluded).
- Initial Backfill: All solid materials are removed, decompressed area of soil.
- – Bedding Layer: Decompressed area of sand.
- – Ho: Distance between the ground to the top of the pipe.
- – b: Width of the trench (mm).
- – Y: Height of the bedding layer (mm).
- – DN: Pipe outside diameter (mm).
- – Ho has to be minimum 50 cm.
