High density polyethylene (HDPE) is a white powder or granular product. Non-toxic, tasteless, crystallinity is 80% ~ 90%, softening point is 125 ~ 135ºC, the use temperature can reach 100ºC; The hardness, tensile strength and creep properties are better than those of low density polyethylene. Good wear resistance, electrical insulation, toughness and cold resistance; Good chemical stability, at room temperature, insoluble in any organic solvent, acid, alkali and various salts corrosion resistance; Thin film permeability to water vapor and air is small, low water absorption; The aging resistance is poor, the environmental stress cracking resistance is not as good as low-density polyethylene, especially the thermal oxidation will reduce its performance, so the resin must be added to antioxidants and ultraviolet absorbers to improve this deficiency. High density polyethylene film in the case of stress thermal deformation temperature is low, should pay attention to the application.

In this century, a revolutionary progress has occurred in the field of pipelines, that is, "to replace steel with plastic". With the rapid progress of polymer materials science and technology, the deepening of the development and utilization of plastic pipes, and the continuous improvement of the production process, plastic pipes have demonstrated their excellent performance vividly. Today, plastic pipes are no longer mistaken for "cheap substitutes" for metal pipes. In this revolution, polyethylene pipes are highly favored and increasingly emit dazzling brilliance, widely used in gas transmission, water supply, sewage, agricultural irrigation, fine particle solid transportation in mines, as well as oil fields, chemical industry and post and telecommunications, especially in gas transmission has been widely used.

Application:

 Used for extruding packaging films, ropes, woven nets, fishing nets, water pipes, injection molding of lower-grade daily necessities and shells, non-load-bearing components, plastic boxes, turnover boxes, extrusion blow molding containers, hollow products, bottles. Used for hollow molded products and blown film products such as food packaging bags, grocery shopping bags, fertilizer lining films, etc.