Anhui nest State 50/55/60 Hengshui bridge prestressed plastic bellows only professional manufacturer of bridge construction, a lot of prestressed structures suffer severe outside influences, when the tension members due to the collapse of the waterproof layer, micro-cracks and leaking drainage facilities obstruction or failure, tendons would be likely to be corrosive effect of prestressed plastic corrugated pipe with HDPE as raw material, is a new material into the hole. Post-tensioned concrete structure applied to the important, the rod into the hole, with good sealing, no leakage of plasma leakage, high ring stiffness, low friction parameters, anti-aging, anti-electric erosion, soft elastic, can not easily be broken tamper chisel and to my mind is the construction more convenient connection strengths. After being corrupt as porous materials, cement slurry is prestressed prestressed steel structure last protective barrier. Prestressed corrugated plastic pipe small quantity and composition of the material formulation, has excellent flame retardant polypropylene, can reach UL94-V0 grade, heat aging resistance, used under 150 ℃ environment, life is more than 700H, workability and polypropylene container similar melt flow better, a large thin-walled products can be molded, the mechanical strength of polypropylene articles close. Heng-licensing prestressed corrugated plastic pipe and corrugated flat tube long life, up to 75 years, thus reducing maintenance times and reduce operating costs. It is not conductive to prevent stray current corrosion, no rust. Light weight, easy handling and connection, construction faster and easier to maintain. Hengshui Optical Engineering Rubber Co., which serves [bridge Bellows / prestressed plastic bellows] latest market prices and detailed parameters. Provide the most authoritative evaluation and pictures.