Description

Brief introduction: The raw material of the plastic corrugation pipe is HDPE with advantages such as resisting corrosive, acid and alkali and preventing the priestess muscle from being eroded. Many pre-stress structures suffer severe influence from environment, such as deice salt or brine. Metal pipe has no permanent anticorrosive capability and cannot resist water leakage, while plastic corrugation is capable to provide a barrier protection for pressing muscle, prevent the pollution from penetrating the pipe, therefore, good performance of pre-stress structure guaranteed. At the same condition, the friction coefficient of preset hole for plastic corrugation pipe are distinctly smaller than that of metal pipe, reducing friction loss of pre-stress in the course of tension. Generally, friction coefficient of the plastic pipe is 0.*4, while metal pipe 0.*5; The plastic pipe having high strength, bearing jam on and its airproof performance and leakage resistance is superior to that of metal pipe, more suitable to vacuum grouting. Plastic corrugation pipe is fatigue resistance.