Product

Production Equipment and Testing of PE Hollow Wall Spiral Pipe

The PE Hollow Wall Spiral Pipe is manufactured using advanced HDPE hollow-wall spiral wound pipe production equipment, ensuring stable quality and consistent structural performance. The pipe forming process is completed in two stages: A-type or B-type profiles are first extruded from the die and evenly wound onto a roller mold at preset positions. At the same time, molten PE material is continuously extruded to fuse the profiles into a unified pipe body.

This integrated production method ensures that the PE Hollow Wall Spiral Pipe achieves high structural integrity, uniform wall distribution, and reliable performance in demanding engineering environments.

Product performance testing is carried out in strict accordance with GB/T19472.2-2004 “Buried Polyethylene (PE) Structural Wall Piping Systems Part 2: Polyethylene Spiral Wound Structural Wall Pipes”. All tested indicators fully comply with standard requirements.

For engineering applications, extensive internal testing has also been conducted on the PE Hollow Wall Spiral Pipe, including electrofusion connection performance, high bending strength, high negative pressure resistance, impact (drop) resistance, and flattening limit tests, ensuring suitability for complex construction conditions.

Structure and Manufacturing Process of PE Hollow Wall Spiral Pipe

The PE Hollow Wall Spiral Pipe is produced using high-density polyethylene (HDPE) as the base raw material. Through a spiral winding process, the material is formed into a spring-like structural wall and then fused under high pressure using high-temperature welding rods of the same material, forming a complete pipe structure.

This spiral hollow-wall structure gives the PE Hollow Wall Spiral Pipe unique mechanical properties similar to a spring, allowing controlled flexibility such as bending, compression, and expansion while maintaining structural stability and preventing collapse.

This feature is particularly important for municipal drainage systems where internal pressure is low but external load pressure is high. The structure significantly enhances resistance to external loads and deformation.

The welded square tube structure and the pipe wall form an I-beam-shaped reinforcement system. This configuration is stabilized by double inner and outer walls, ensuring a secure load-bearing framework. Under external pressure conditions, the PE Hollow Wall Spiral Pipe maintains structural integrity and reduces deformation risk.

In addition, the spiral hollow-wall design not only improves external pressure resistance but also reduces overall material weight, making transportation and installation more efficient.

Product Advantages of PE Hollow Wall Spiral Pipe

Excellent Chemical Corrosion Resistance and Hygiene Stability

The PE Hollow Wall Spiral Pipe provides strong resistance to chemical corrosion and environmental erosion. It remains stable when exposed to sewage, wastewater, industrial chemicals, and corrosive soil conditions.

Strong Cold Resistance and Aging Performance

The pipe demonstrates excellent resistance to low temperatures and long-term aging. Its black surface improves resistance to sunlight exposure during storage and construction. It does not crack, freeze, or expand under low-temperature conditions, ensuring reliable sealing performance.

High Mechanical Strength and Structural Toughness

The I-beam structural design significantly enhances pipe strength and flexibility. The PE Hollow Wall Spiral Pipe effectively resists external loads and ground settlement, making it suitable for road and heavy-load environments.

Reliable Connection and Efficient Construction

The system supports electrofusion and heat-shrinkable tape connection methods. These ensure fast installation, high joint strength, and uniform material integration between pipe body and fittings. The sealing structure is stable, safe, and highly reliable for long-term operation.