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Product advantages of plastic bellows

Update:15-07-2020
Summary:

  Compared with metal bellows and other holes, plastic […]

  Compared with metal bellows and other holes, plastic bellows have the following advantages.
   1) The raw material of plastic corrugated pipe with good corrosion resistance is high-density polyethylene, its corrosion resistance is far superior to metal, and it is resistant to acid and alkali corrosion. The concrete structure can effectively prevent the aging of organic materials caused by light and other media. When the waterproof function of the component fails due to cracks, the plastic bellows can provide good protection for the prestressed tendons and cement paste.
   2) Good insulation performance The plastic bellows itself is a non-metallic material with good insulation performance. Can avoid electrochemical corrosion. It can effectively avoid hole defects caused by electric welding during construction.
   3) The measured friction coefficient of the plastic bellows with small friction coefficient is Q07~013. The friction coefficient of metal bellows pipeline is 020~0.25. Therefore, the prestress loss of the structure using plastic bellows is greatly reduced, which can increase the effective prestress, increase the efficiency of the prestressed material, and save steel.

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