**Which manufacturer of tunnel escape pipes is good?** Our company is located in the Airport Industrial Park of Luoyang City, with convenient transportation. The company covers an area of more than 200 acres and specializes in the production of tunnel rescue pipes, primarily focusing on the manufacture of large-diameter steel belt spiral corrugated pipes, with professional personnel for after-sales service. Our company has a complete and scientific quality management system. Friends from all walks of life are welcome to visit, guide, and negotiate business.  **Application of Luoyang Metro tunnel escape pipes:** 1. The escape pipes made from ultra-high molecular weight polyethylene use φ800mm ultra-high molecular weight polyethylene pipes, with a pipe section length of 15m and a wall thickness of 30mm. Couplings with a diameter larger than the escape pipes can be used for connections between pipe sections, with 1m connections at both ends, temporarily fixed using rubber rings or wooden wedges. To ensure the pipes can withstand the pressure from a collapse, the materials used must have sufficient pressure resistance, and the joints must be secure. Only after specific testing in the laboratory can they be used in tunnels. **Which manufacturer of tunnel escape pipes is good?** 2. The construction site should prepare sufficient pipes and connection materials according to the surrounding rock and excavation methods of the tunnel. In addition to whole pipe sections, short pipe sections of 1m, 2m, and 3m, as well as transition joints, should also be adequately prepared. 3. The ultra-high molecular weight polyethylene escape pipes can be processed on-site according to the material and actual conditions, with simple, secure, and reliable connections. Temporary fixing measures should be taken on the ground. During construction, temporary caps can be added to the pipe openings, which are easy to open and close. 4. The Luoyang Metro tunnel escape pipes use φ800mm socket-type ultra-high molecular weight polyethylene pipes, with the starting point set at the completed secondary lining end, and the distance from the secondary lining end should not exceed 5 meters. They should be arranged to a proper location within 20m from the excavation face, laid along one side of the initial support towards the face, with a working rope reserved inside the pipe for easy escape, rescue, communication, and transmission of various items. Longitudinal connections of the socket-type ultra-high molecular weight polyethylene pipes can use chains and other measures to prevent the pipes from being dislodged during a collapse. 5. During the movement and positioning of the ultra-high molecular weight polyethylene escape pipes on the secondary lining cart, they should be removed section by section. It is strictly prohibited to remove them all at once to ensure the effectiveness of the escape pipes is always maintained. 6. When passing through excavation steps, the ultra-high molecular weight polyethylene escape pipes should be laid in accordance with the steps, installing 135° transition joints to follow the steps. The height and length of the pipe should not affect the construction and should facilitate the opening of escape windows. 7. The installed ultra-high molecular weight polyethylene escape pipes should be flat, dry, and unobstructed, and should not be used for purposes other than emergency escape. 8. The length of the laid ultra-high molecular weight polyethylene escape pipes is 100m. **Which manufacturer of tunnel escape pipes is good?** The raw materials are uniformly supplied by the Shanghai Chemical Research Institute, with a stable molecular weight greater than 2.5 million, and extensive experience. **Large scale:** covers an area of 2000 acres, with 31 production lines for ultra-high pipes, operating 24 hours a day. **After-sales service:** one-year warranty, providing measurement and installation after-sales service.  Henan Deyuan Rubber and Plastic Products Co., Ltd. is a high-tech enterprise integrating R&D, production, and sales, specializing in the production of ultra-high molecular weight polyethylene pipes, **which manufacturer of tunnel escape pipes is good?**, steel belt reinforced polyethylene (HDPE) spiral corrugated pipes, HDPE pipes, internally and externally coated composite steel pipes, 3PE anti-corrosion pipes, lined plastic pipes (steel lined PO pipes, steel lined PE pipes, steel lined fluorine pipes), rubber-lined pipes, and other series of multi-specification pipe fittings and materials. The products are mainly applied in industries such as chemical, electric power, mining, metallurgy, pharmaceuticals, water conservancy, municipal, construction, environmental protection, dredging, and coal washing. Customers interested are welcome to visit our company for inspection. We look forward to your arrival!