Lianyungang Donghai County, Jiangsu 60 * 25/70 * 25 bridge prestressed plastic corrugated pipe scale light quality manufacturers [bridge] Rubber bellows / prestressed bellows / corrugated plastic pipe / metal bellows / concrete cast plastic bellows / prefabricated slab dedicated bellows corrugated plastic pipe for post-tensioned concrete structure, as tendon duct into the hole. Is a new type of porogen. Has the following characteristics: a, with good corrosion resistance, improve corrosion protection tendons. b, with good physical properties, non-conductive to prevent stray current corrosion, good sealing performance, no rust; under load, impermeable; high strength. Stiffness, impact resistance, and are not afraid to step on the pressure. c, to reduce tension in the process of pre-stressed friction losses. Scale light brand plastic bellows Product Details: 1. comply with the technical requirements of the transportation industry standard JT / T 529-2004 2. Material: prestressed plastic corrugated pipe using the original granular raw materials. Do not use powdered and granular materials recycling. High-density polyethylene (HDPE) shall meet the requirements of GB / T11116, and polypropylene (PP) should meet the requirements of GB / T18742.1 of. 3. Appearance: prestressed plastic bellows appearance should be smooth, uniform color, inside and outside the walls of the spacer does not allow broken, scratched bubbles, cracks, lumps and affect use. 4. Ring stiffness: prestressed plastic corrugated pipe ring stiffness of not less than 6kN / m2 5. partial lateral load: prestressed plastic corrugated pipe to withstand the lateral partial load, the pipe surface should not rupture; 5min after unloading pipe shall not exceed the amount of residual deformation 10% of the pipe diameter. 6. Flexibility: prestressed plastic corrugated pipe bending method prescribed after repeated bending or five times, special plug can be passed from prestressed corrugated plastic pipe, then qualified prestressed flexible corrugated plastic. 7. Impact resistance: prestressed plastic bellows cryogenic vacuum drop hammer impact test the impact of the rate of TIR maximum allowable value of 10%. 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