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with the trend of the development of science and technology, the application of plastic corrugated hose is more and more widely, in recent years will replace corrugated metal hose, corrugated plastic hose is a new kind of pore forming material, with a corrugated metal hose, it has a unique advantage; First of all plastic corrugated hose is the raw material of HDPE. Its corrosion resistance is much better than the metal, not afraid of acid, alkali, corrosion, it is not corrosion, can effectively protect of the prestressed steel from corrosion. A lot of prestressed structure under the serious influence, such as deicing salt or salt water. When after component due to the collapse of the waterproof layer, micro fissure water and drainage facilities of blocking or fails, prestressed reinforcement will likely from corrosion. Corrugated metal hose without anti-corrosion ability to resist water leakage and reach the slurry and prestressed reinforcement. And plastic corrugated hose for prestressed bars offer a is much better than the barrier protection of corrugated metal hose, can prevent the pollution of harmful substances through the pipe, to ensure the durability of post-tensioned prestressed structure has better.plastic corrugated hose intensity is high, is not afraid of pressing, its sealing leakage resistance higher than that of corrugated metal hose, more suitable for the vacuum grouting; Plastic corrugated hose non-conductive, can prevent stray current corrosion, and the corrugated metal hose is good conductors of electricity. Plastic corrugated hose has better performance of hardships and stand hard work, can greatly improve the fatigue resistance of components. From the analysis of corrugated metal hose is about to quit the stage of history, a series of advantages of plastic corrugated hose greatly attract the attention of the engineering company, so, with the development trend of science and technology, the application of plastic corrugated hose is more and more widely, in recent years will replace corrugated metal hose.
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