Life has no way back; once you have walked through it, you cannot go back. There will definitely be many sorrows and regrets. Just like many manufacturers do not accept returns; once you buy it and cannot use it, it's distressing. Can companies like this guarantee quality? However, Luoyang Guorun New Materials guarantees quality. If there are quality issues within the warranty period, exchanges are possible. Such guarantees can only be provided by large enterprises. What we focus on at Guorun is quality and brand. Our company's new type of escape pipeline specification is φ800×30mm, with each section measuring 3 meters in length and weighing 69.7 pounds per meter (the steel pipe weighs 210 kilograms per meter). The design basis for the size of the ultra-high molecular escape channel is as follows: According to the research results of Alvin R. Tilly, a pioneer expert in anthropometry from the United States, it is known that the most comfortable crawling height for a person is 800mm, and the crawling length is 1520mm. Alvin R. Tilly pointed out that when crawling through the bottom entrance and exit of a circular opening that allows full-body entry, the minimum diameter of the circular pipe must be 800mm. Therefore, the inner diameter of the ultra-high molecular escape channel must be ≥ 585mm to ensure normal passage for the human body. At the same time, considering the actual conditions at road tunnel construction sites, the outer diameter of the emergency rescue channel should not be too large to avoid significant impact on construction; thus, the outer diameter of the ultra-high molecular escape channel is set at 800mm. The tunnel escape pipe has excellent comprehensive performance, mainly including the following points: 1. Lightweight, weighing only about 1/3 of the weight of a steel pipe, making it easy to disassemble and transport. 2. The pipe has good toughness and high impact strength; when subjected to strong external forces, it deforms instantly, absorbs a large amount of impact energy, and then quickly restores its original shape, providing extremely reliable protection for emergency rescue in tunnel construction. 3. The pipe has high ring stiffness, good pressure resistance, and is not easily deformed. In the event of a collapse during road tunnel construction, its load-bearing capacity and resistance to environmental damage far exceed that of ordinary pipes. 4. Easy installation; the tunnel escape pipe uses clamp connections for convenient disassembly. 5. Reusable; because the escape pipe is made from ultra-high molecular weight polyethylene material, which has excellent anti-aging properties and slow embrittlement, its theoretical lifespan is over 100 years. Although tunnel escape pipes are not commonly seen in daily life, they are essential in tunnel construction. Their importance is akin to that of seat belts in cars and safety helmets on electric bikes, constantly protecting us. Luoyang Guorun New Materials specializes in the production of ultra-high molecular tunnel escape pipes and is one of the few comprehensive enterprises in China that integrates R&D, production, sales, installation, and after-sales service. We not only have our own R&D team but also collaborate with the Shanghai Chemical Research Institute for technical cooperation, continuously developing new products and innovating technology. In terms of plastic piping, we have strong capabilities and craftsmanship, making us a trustworthy enterprise for our customers! Luoyang Guorun New Material Technology Co., Ltd. primarily operates in ultra-high pipes, mining pipes, tailings pipes, desulfurization pipes, wear-resistant rubber-lined steel pipes, rubber-lined steel pipes, anti-corrosion rubber-lined steel pipes, wear-resistant pipes, and ultra-high molecular weight polyethylene wear-resistant pipes. Sales Manager: Manager Sun (136-9888-7149) 185-3886-9025, 0379-6522-7507. Factory Address: China, Luoyang Airport Industrial Agglomeration Zone, Zhejiang Business Industrial Park.