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  3. Introduce the flexibility of plastic cor...

Introduce the flexibility of plastic corrugated pipe in the production line of prestressed plastic corrugated pipe

Introduce the flexibility of plastic corrugated pipe in the production line of prestressed plastic corrugated pipe

After the plastic corrugated pipe in the prestressed plastic corrugated pipe equipment is repeatedly bent five times according to the prescribed bending method, the special plug gauge can pass through the plastic corrugated pipe smoothly, and the flexibility of the plastic corrugated pipe is qualified. The allowable value of TIR for the vacuum impact rate of the plastic bellows low temperature drop hammer impact test is 10%. Connection of plastic corrugated pipe  The length of the plastic corrugated pipe can be welded by a plastic welding machine or mechanically connected. The mechanical connection is carried out in the form of joints, including three types of connecting pipes for connecting pipes to pipes, connecting heads for connecting pipes to anchor pads, and exhaust pipe connecting heads for connecting pipes to exhaust pipes. The pre-stressed plastic corrugated pipe has good flexibility, high ring stiffness, not afraid of stepping on pressure, and not easy to be smashed by a ram. Pipe, used for post-tensioned pre-stressed concrete structures, as a hole-forming pipe for pre-stressed tendons.

Prestressed plastic corrugated pipe is a new type of hole-forming material. Compared with prestressed metal corrugated pipe, it has the following advantages:

   1. The pre-stressed plastic corrugated pipe is made of high-density polyethylene (HDPE) as the raw material with advanced production technology. Its corrosion resistance is far better than that of metals, it is not afraid of acid and alkali corrosion, it does not corrode itself, and can effectively protect the prestressed tendons from corrosion. Many prestressed structures are subject to severe external influences, such as deicing salt or salt water. The prestressed plastic corrugated pipe can provide a barrier protection effect for the prestressed tendons that is far superior to that of the metal corrugated pipe, and can prevent harmful substances from penetrating the pipeline from pollution, thereby ensuring that the post-tensioned prestressed structure has better durability.

2. Under the same conditions, the friction coefficient of the pre-stressed plastic corrugated pipe is significantly smaller than that of the metal corrugated pipe, which reduces the friction loss of the pre-stress during the tensioning process. The friction coefficient of general prestressed plastic bellows is 0.14, while the friction coefficient of metal bellows is 0.25; the strength of prestressed plastic bellows is high, not afraid of stepping on pressure, not easy to be smashed by vibrating rods, and its sealing performance and impermeability The performance is higher than that of metal bellows, and it is more suitable for vacuum grouting;

Prestressed plastic corrugated pipe equipment

  3. The prestressed plastic corrugated pipe has good flexibility, high ring stiffness, not afraid of stepping on it, and not easy to be broken by a ramming rod.

  4. The prestressed plastic corrugated pipe is non-conductive, which can prevent stray current from corroding, and metal is a good conductor of electricity;

  5. The prestressed plastic corrugated pipe has better labor resistance and can greatly improve the fatigue resistance of the components

If you want to know more about it please do not hesitate to contact me. WhatsApp:+86-15966835076.


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