Henan Deyuan Rubber and Plastic Products Co., Ltd. is a manufacturer specializing in the production and sale of subway tunnel escape pipes. The subway tunnel escape pipe features high impact resistance, high pressure resistance, and high wear resistance, making it suitable for emergency rescue during highway tunnel construction. Our company produces two specifications of tunnel escape pipes: Φ630*22mm and Φ800*30mm, with guaranteed quality and sufficient stock. We welcome everyone to inquire and order! **Price of 800 tunnel escape pipe** Subway tunnel escape pipe verification parameters: **Price of 800 tunnel escape pipe** | Project | Unit | Test Method | Ultra-high Model | | Other Engineering Plastics | | | | | |----------------------|------------|----------------|------------------|--------|---------------------------|--------|--------|--------|--------| | | | | SLL-2 | SLL-3 | Nylon 66 | Polycarbonate | Polyoxymethylene | Polytetrafluoroethylene | | Density | g/cm³ | ASTM D1505 | 0.935 | 0.930 | 1.14 | 1.2 | 1.4 | 2.16 | | Average Molecular Weight | GB/T1841-1980 | Viscosity Method | 2,500,000 | 3,000,000 | - | - | - | - | | Yield Point Stress | Kg/cm² | ASTM D638 | 220 | 220 | - | - | - | - | | Tensile Strength | Kg/cm² | ASTM D638 | 400 | 500 | 750 | 640 | 700 | 200 | | Elongation at Break | % | ASTM D638 | 350 | 300 | 200 | 110 | 75 | 300 | | Impact Strength (Notched) | Kg.cm/cm | ASTM D256 | Unbreakable | Unbreakable | 11 | 80 | 10 | 16 | | Impact Strength (Unnotched) | Kg.cm/cm | ASTM D256 | 110 | 105 | - | - | - | - | | Brinell Hardness | D | ASTM D2240 | 40 | 40 | 100 | 118 | 120 | - | | Dynamic Friction Coefficient | Kg/cm².m/s | Mitsui Sanwa | 0.2 | 0.2 | 0.4 | - | 0.4 | 0.2 | | Abrasion Rate (Sand Abrasion Method) | mg | Mitsui Sanwa | 20 | 15 | - | - | 170 | 225 | | Melting Point | ℃ | ASTM D2117 | 136 | 136 | 255 | 240 | 166 | - | | Vicat Softening Point | ℃ | ASTM D1525 | 134 | 134 | - | - | - | - | | Heat Deflection Temperature | ℃ | ASTM D648 | 85 | 80 | 200 | 138 | 170 | 121 | | Expansion Coefficient | - | - | - | - | - | - | - | - |