/LUN Wen/449/sort 0495/2008020790742 . html 1。 Review on the application status of plastic pipes: mainly introduce the application status and production status of plastic pipes. Since 1950s, with the rapid development of petrochemical industry, the deep processing technology of petroleum has become more and more perfect, the types of plastic products have diversified, and the output has increased rapidly, which has gradually developed into a new engineering material. Plastic HDPEs is similar to traditional pipes ... Category: Material Engineering Author: Anonymous date: February 7, 2008 [see details] 2. The rigid PVC pipe (UPVC), foam core pipe (PSP), rigid PVC silencing pipe, plastic corrugated pipe and chlorinated PVC pipe (CPVC) are briefly introduced. Crosslinked polyethylene pipe (PEX), steel-plastic composite pipe, aluminum-plastic composite pipe (PA ... Category: Material Engineering Author: Wang Lenong Date: February-July 2008 [see details] 3. Principle of plastic optical fiber transmitting light Abstract: Plastic optical fiber POF can transmit light because the fiber has a core-sheath structure, and the transmission of light in POF is based on the principle of total reflection, and the transmission mode of light in GIPOF is total reflection. Meridian is the propagation path of light. ...