The performance of PE pipe products depends on the quality of raw materials, processing equipment and processing technology control. High-quality PE water supply pipe cutting strips are shiny and smooth, and are not easily broken after repeated folding. On the contrary, the bad color is dark, the fold is easy to break, and it is relatively fragile.
Easy butt welding and electrofusion welding to form a closed impermeable system. When laying along the trench, the amount of earthwork excavated and the amount of accessories can be reduced. In order to reorient the macromolecules of the profile, it is heated to a temperature between the glass transition temperature and the melting point, stretched under the action of external force, and then rapidly cooled to room temperature. Films or monofilaments made by biaxial stretching have increased stretch direction.
The main production material of hdpe pipe is made of high-density polyethylene, so the product has the characteristics of the material. Although hdpe drainage pipes have good performance, they are not stable and will change due to changes in temperature.
In order to increase the softening temperature, some manufacturers simply increase the amount of filler when batching. This can indeed increase the softening temperature, but it will greatly reduce other properties of the pipe, especially impact resistance, tensile strength and toughness. Therefore, it is necessary to increase the softening temperature. temperature. When the geological conditions, filling material, compaction process, pipe diameter, etc. change, the above-mentioned inspection contents should be repeated. For the allowable short-term (24h) flattening rate, the short-term flattening rate of the measured value of HDPE large-diameter plastic pipe construction deformation should be ≯ 4%.
In addition, the application fields of PE pipes also include PE biogas pipes, PE-RT heating pipes for cold and hot water, PE telecommunication, cable sheathing pipes, etc. Because of its wear resistance, acid and corrosion resistance, high temperature resistance, high pressure resistance and other characteristics, it has gradually replaced traditional pipes such as steel pipes and cement pipes.
Post time: Apr-27-2022