Where to Buy 820 Steel Escape Pipeline Safety protection measures and facilities need to be continuously supplemented and improved. As construction progresses from foundation to main structure, unsafe factors and safety hazards are constantly changing and increasing, necessitating timely protective measures to ensure safe construction in response to the changing situations and newly emerging hazards. Manager Sun 136-98887149 Advantages of the New Steel Tunnel Escape Pipeline: 1. Inner epoxy-lined steel tunnel escape pipeline has low material costs, saving procurement costs for engineering projects. 2. Very strong corrosion resistance, easy construction, and a service life of 30-50 years. 3. Good corrosion resistance and impact resistance even under low temperature conditions. 4. High strength of epoxy powder, providing high corrosion protection reliability. 5. Reasonable design and easy installation. The pipeline ends are equipped with connection parts and lifting hooks to ensure easy installation and lifting. 6. The inner epoxy-lined steel tunnel escape pipeline has an epoxy powder anti-corrosion coating in contact with the steel pipe surface, and an outer layer of resin anti-rust paint. The inner wall is smooth, allowing for quick escape during an accident, minimizing the risk of secondary injuries. 7. The inner anti-corrosion coating combines the high impermeability and mechanical properties of epoxy resin and polyethylene materials. So far, it is recognized as an effective and high-performance anti-corrosion coating for pipelines, widely applied in various projects. Specifications of Steel Escape Pipeline: φ820*10mm, φ1020*10mm, φ1120*10mm, and can also be customized. Reliability Verification of Tunnel Escape Pipeline Experiment Purpose To demonstrate the feasibility of using ultra-high molecular weight polyethylene pipes for emergency rescue in road tunnel collapses by conducting impact resistance tests on tunnel escape pipes and steel pipes of similar dimensions. Test Materials: 1. Q235 spiral seam buried arc welded steel pipe, specification: Φ620×10. Yield strength σ1=215GPa, elastic modulus E1=210MPa; Poisson's ratio ν1=0.25. 2. Sichuan 800 escape pipeline, specification: Φ800×30, yield strength σ1=3.7GPa, elastic modulus E1=700MPa; Poisson's ratio ν1=0.42. Test Requirements and Methods After being impacted, the tunnel escape pipeline had stones ejected and incurred almost no damage, demonstrating good impact resistance; the steel pipe was flattened and deformed upon impact. The results indicate that the ultra-high molecular weight polyethylene tunnel escape pipeline has extremely high impact resistance, and external impacts cannot cause it to rupture. Moreover, it has excellent toughness and energy absorption capabilities, absorbing most of the impact energy during collision with large stones, thereby reducing damage to the pipeline. The impact resistance of the steel pipe is inferior to that of the tunnel escape pipeline, and it deforms upon being struck by stones, making recovery difficult. Conclusion The 800 escape pipeline is the first designed emergency rescue passage for road tunnel construction. Additionally, the structure and dimensions of the ultra-high molecular weight polyethylene tunnel escape pipeline conform to ergonomic principles, featuring a simple structure and easy disassembly. Furthermore, the comparative impact resistance tests between the tunnel escape pipeline and steel pipe validate the reliability of the ultra-high molecular weight polyethylene tunnel escape pipeline for emergency rescue in road tunnel construction. Design of Structural Dimensions of Steel Tunnel Escape Pipeline The design of the pipe diameter for the steel tunnel escape pipeline is based on studies by American expert Alvin R. Tilly, a pioneer in anthropometry, indicating that a comfortable crawling height is 800mm and crawling length is 1520mm. As shown in the figure below, during the crawling process, the ergonomic requirements for human movement are essential. Alvin R. Tilly pointed out that when crawling through the bottom entry of a circular hole for full-body entry and exit, the minimum diameter of the circular pipe should be 585mm. Therefore, the inner diameter of the new emergency rescue passage for tunnel construction must be ≥585mm to ensure normal human passage. At the same time, considering the actual situation of the tunnel construction site, the outer diameter of the emergency rescue passage should not be too large to avoid significant impacts on construction. Hence, the outer diameter of the polyethylene pipe is set at 636mm. Application Fields of Inner Epoxy-Lined Steel Anti-Corrosion Tunnel Escape Pipeline: Highways: Tunnel safety passages. Municipal Engineering: Suitable for water supply in high-rise buildings, heating networks, tap water projects, gas transmission, underground water delivery, and other pipelines. Sewage Treatment: Sewage discharge pipes, sewage pipes, and anti-corrosion projects for biological pools. Luoyang Guorun New Materials Technology Co., Ltd. welcomes you to visit our factory for inspection! Sales Manager: Sun 13698887149