Steel strip pipes are made with U-shaped steel strip and composite PE material, enhancing hoop stiffness without increasing costs, and are superior to coiled pipes and Kralle pipes in terms of weight. They can address heavy load issues and more. The large diameter production pipes range from DN300mm to DN2400mm, maintaining hoop stiffness above 8KN/m², and are lighter than cement pipes and other plastic pipes.
Characteristics of steel strip pipes:
1. Resistant to contamination, waste water, and chemical corrosion; not prone to corrosion due to decomposing matter in the soil.
2. The pipe wall features a "U"-shaped structure, which is less prone to cracking even under ground settlement conditions. Additionally, it has excellent recovery properties after deformation, demonstrating great adaptability to the ground.
3. Pipe materials are typically black and can withstand direct sunlight exposure during storage and construction.
4. Pipe materials are not prone to cracking or leaking due to expansion in -60℃ environments.
5. Lightweight: easy to transport and install, being only 1/8 the weight of cement pipes; installation requires only an excavator, no large machinery needed.
6. Easy to connect; piping can be assembled outside the trench first, then pushed into the trench with a bulldozer, reducing construction time and costs.
7. Good transportation capacity for domestic wastewater sludge.
8. Smooth interior reduces friction and ensures rapid drainage.
9. Low construction, management, and maintenance costs.
10. The circular external tensile reinforcement structure of the pipe not only enhances the hoop stiffness of the pipe but also serves as a root restraint, addressing the tension and well-capping issues caused by longitudinal displacement of the pipeline.
11. Due to the elastic modulus ratio of steel and plastic materials being greater than 200 and the weight ratio being greater than 7.85, steel strip reinforcement makes it easier for pipes (especially large-diameter pipes) to have hoop stiffness and stiffness-to-weight ratio compared to pure plastic pipes.
