New shock-resistant PE plastic pipe is favored

For the anti-seismic performance of PE pipelines, people in the industry have a relatively uniform understanding: PE pipes have unique flexibility and excellent scratch resistance, they are easy to move, bend and interpenetrate, and they are not easily damaged due to pavement settlement and dislocation. Good performance. In the 1995 Kobe Earthquake in Japan, the only pipeline that did not cause massive damage was the PE gas pipe and the water supply pipe. It is precisely because of the many advantages including the advantages of the PE pipe, which makes it occupy an important position in the European pipeline market, and has become the fastest growing pipeline product in various plastic pipe products in the United States for more than ten years.

In PE pipeline products, the anti-seismic performance of a composite pipe made of PE as a base material and reinforced with a steel wire mesh skeleton, a steel mesh skeleton plastic (PE) reinforced composite pipe, has also received attention. This kind of pipe inherits the advantages of pure PE pipe. Because of the reinforcing effect of the steel wire mesh frame, its ability to adapt to conditions such as land subsidence becomes more prominent. During the construction of the Olympic venues, this kind of pipe was selected as the buried domestic water pipe for the National Stadium because of these advantages.

For the anti-seismic performance of PVC pipes with flexible interfaces, some consumers still have some misunderstandings in their understanding – mistakenly assuming that the connector of the product is as brittle as its tubing product itself. However, relevant data shows that the plastic resistance of flexible joints is also very obvious. Similar to the steel mesh reinforced plastic composite pipe in the PE pipeline, the PVC-M pipe's anti-seismic performance of the modified product of the PVC pipe is no worse than that of the PVC-U.

According to experts, in addition to plastic pipe, the seismic performance of some metal pipe products and concrete pipes is also outstanding. In the metal pipe products, the centrifugal ductile iron pipe is outstanding because of its extensibility and seismic performance. When the terrain changes, the installed ductile iron pipe can be deflected by 35 degrees along the axis, and the damage rate in the earthquake is very low. According to the information provided by the relevant industry associations, the prestressed steel concrete pipe (PCCP) is also ideal for seismic performance. According to reports, the PCCP tube is a rigid tube, and the connectors are socket-type and flexible.

Therefore, it is a flexible design as a whole, which makes it one of the tubes with good shock resistance. According to the data, on September 21, 1999, after the 7.3-magnitude earthquake in Taiwan, relevant authorities investigated the damage to the public water supply equipment in the earthquake. It was found that only PCCP did not cause any damage in all the pipelines. About 10 kilometers away from the epicentre of this earthquake, a PCCP pipeline with a diameter of 4 meters and a length of 3 kilometers performed well in this earthquake and was basically not damaged.