The pp pipe has very good physical properties and good corrosion resistance. It is light in weight and does not require maintenance during the whole process of application. The use of steel as the sewage pipeline of the same project is easy to use in the whole process of application. Erosion, architectural coatings must be applied frequently, and maintenance costs are high. The metal pipes used in general engineering construction and the same engineering projects need to be exchanged for up to 20 years, while the pp pipes with excellent performance and processing have a service life of up to 50 years.
Therefore, pp pipe is an excellent plastic product with low cost, high compressive strength and corrosion resistance. There are no special requirements for the use of plastic machines. Because pp pipes have high crystallinity. It is necessary to use a computerized plastic machine with high injection pressure and multi-stage operation. The clamping force is generally judged by 3800t/m2, and the injection amount is 20%-85%.
To put it bluntly, the “co-extrusion technology” of pp pipes is to add different kinds of raw materials or different kinds of raw materials to the silo in the extrusion server and each co-extrusion machine. Quantitative analysis, uniform extrusion into the engine, and transmission to the separately assigned runners, under the effect of working pressure and temperature, this melt “complies with traffic regulations”, then combines in the die area and extrudes from the forming section of the engine, After being refrigerated and shaped, the production and processing method of the desired composite material is obtained.
