Diameters ranging from 100 mm up to 2500 mm
SEIF AL NASR is recognized as one of the leading manufacturers in Egypt’s plastic pipe industry. Established in 2004 in Borg El Arab, the company was founded to meet the growing demand for high-quality plastic products in both local and regional markets. Its latest manufacturing facility, located in 10th of Ramadan City, is equipped with state-of-the-art machinery and advanced production technologies, with an annual production capacity of 240,000 tons of plastic materials.
SEIF AL NASR provides a comprehensive range of corrugated products, including pipes, fittings, manholes, and chambers, with internal diameters ranging from 100 mm up to 2500 mm. The company also offers various ring stiffness classes designed to suit different soil conditions, installation depths, excavation widths, and groundwater levels. Ring stiffness specifications are either provided by project consultants or carefully designed by SEIF AL NASR’s engineering team to ensure optimal performance and reliability.
• Underground drainage and sewer application
• Disposal of industrial effluents Stormwater
• Drainage Rainwater harvesting and
• Ground water recharge Road/highway cross
• Drainage cable piping ducts
• Anti-corrosion
• Resistant to chemical attack
• Resistant to micro organisms UV Resistance
• High flexible and impact strength
• Fully leak tight and water tight
• Smooth inner surface
• Resistant to degradation bu uv rays
• Useful life time over years
• Deformation resistance
• ECO friendly
• Long life pipe
• Cost effective - 60 to 70% weight saving in comparison to solid wall plastic pipes and 95% lighter than concrete pipes makes these pipes much cost effective
• Excellent Stiffness
• Easy transportation (very light) & quick installation
When a flexible pipe, such as an HDPE profiled pipe, is subjected to vertical soil loads, it undergoes slight deflection. This deformation generates horizontal soil pressure that acts as a support. When the vertical and horizontal pressures are nearly equal, the load distribution around the pipe resembles a hydrostatic condition. In this state, the pipe wall is mainly subjected to circumferential (hoop) compressive stresses.
With increased burial depth, there is a higher risk of buckling. However, as the pipe deflects under vertical load, it mobilizes passive soil resistance along its sides. This interaction results in a ring deflection that significantly reduces the vertical load on the pipe itself. Instead, the load is transferred to the surrounding soil, which forms a natural arching effect over the pipe. In essence, when a flexible pipe like HDPE is buried, the pipe and the surrounding soil form a composite structure, working together to distribute loads and maintain system integrity.
STD [DIN16961/EN13476], Specifications for Polyethylene (PE) pipes with profiled or double wall pipes with outside corrugated and inside smooth surface
Borouge, Sabic and Tasnee
Polyethylene is thermoplastics with excellent properties for the application of water and sewer, as well as for the fabrication of containers for liquids and solid materials.
For information and guidance, please refer to the original Saif Al Nasr catalog.
We are providing different services in this sector to wide area of world with cleanest line of services.
Our factories are equipped with the latest German technology
Machinery to guarantee the highest quality products served by a professional team
Experienced quality control team.
- Quality tests
- Ring Flexibility
- Oxidation Induction Time Test
- Impact Test
- Melt Flow Index Test
- Ring Stiffness
- Creep Ratio
- Physical Properties
- Water Tightness Test
- Effect on Heating
Rubber ring placed on the spigot end..
Our system features a solid, plain socket and spigot connection. The minimum wall thickness of the spigot complies with the requirements outlined in EN 13476-3, Table 7. Additionally, the combined ring stiffness of the socket and spigot exceeds the ring stiffness of the main pipe, ensuring enhanced structural integrity and reliable joint performance.
Remark: On special request, pipes can be supplied with other jointing techniques like extrusion welding, flange connection, and butt welding.
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Tightness test
When under 0.5 bar 15 min conditions according to joins welded with electro-fusion method according to TS 12132 standard. No leakage shall occur at the end of period.
Ring rigidity calculations
All structural calculations for SEIF profiled pipes are carried out based on the specific project conditions and in compliance with relevant DIN and ATV standards. The ring stiffness and external load resistance of SEIF spiral pipes are evaluated in accordance with ATV A 127, while product testing is conducted following DIN 16961 guidelines.
As a standard practice, durability calculations are performed with a safety factor of 2, ensuring the reliability and long-term performance of the pipe under operational conditions.
CPW (close profile wall)
This type of profile pipe features a smooth interior and exterior surface, incorporating one or more internal profile layers. Its advanced structure provides exceptionally high long-term stiffness, making it an ideal solution for applications involving extremely high loads and large diameters.
SW (Solid wall pipe)
The SW type is a homogeneous, solid-wall pipe with smooth inner and outer surfaces. These pipes are suitable for applications involving internal working pressure. Wall thicknesses range from a minimum of 5 mm up to a maximum of 80 mm, allowing for use in a wide variety of pressure and structural requirements.
