The raw material of the plastic corrugation pipe is HDPE, resisting corrosive, acid and alkali, preventing the prestressing muscle from boing eroded. Many prestressing structures suffer severe influence from environments, such as deicing salt or brine. Metal pipe has not permanent anticorrosive capability, cannot resist water leakage, while plastic corrugation is capable to provide barrier protection for prestressing muscle, prevent the injured pollution from penetrating the pipe, therefore, the good perdurable performance of prestressing structure is guaranteed.
At the same condition, the friction coefficient of the preset hole for plastic corrugation pipe is distinctly smaller than that of metal pipe, reducing friction loss of prestressing in the course of tension. Generally, the friction coefficient of the plastic pipe is 0.14, while for metal pipe it is 0.25, the plastic pipe having high strength, bearing jam on and it's airproof performance and leakage resistance is superior to that of metal pipe, more suitable to vacuum grouting.
Don't electric.
Plastic corrugation pipe has fine fatigue resistance.
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