Hdpe water supply pipe, plastic pipe is developing steadily, PE pipe, PP-R pipe, UPVC pipe has a place, of which the strong development momentum of PE pipe is the most remarkable. PE pipes are used in a wide range of fields. Among them, water supply pipe and gas pipe are the two largest application markets.

PE resin is formed by the polymerization of monomer ethylene, due to different polymerization conditions such as pressure and temperature during polymerization, different density resins can be obtained, so there are high density polyethylene, medium density polyethylene and low density polyethylene. When processing different types of PE pipes, according to the different application conditions, different resin grades are selected, and the requirements for extruders and molds are also different.

Internationally, the material of polyethylene pipe is divided into five grades: PE32, PE40, PE63, PE80 and PE100, while the material used for gas pipe and water supply pipe is mainly PE80 and PE100. There is no classification of special materials for polyethylene pipes in China, which makes it difficult for domestic polyethylene gas pipe and water supply pipe manufacturers to choose raw materials, and also brings a lot of hidden dangers to the use of polyethylene pipes.

Therefore, the National Bureau of Standards has made a lot of revisions in the new GB/T13663-2018 standard, stipulating that different levels of PE80 and PE100 for water supply pipes correspond to different pressure strengths, and removing the tensile strength properties in the old standard, while increasing the elongation at break (greater than 350%), that is, emphasizing basic toughness. Edit Broadcast

hdpe water supply pipe is the traditional steel pipe, polyvinyl chloride drinking water pipe replacement products.

Hdpe water supply pipe must withstand a certain pressure, usually to choose a large molecular weight, good mechanical properties of PE resin, such as HDPE resin. LDPE resin has low tensile strength, poor pressure resistance, poor rigidity, poor dimensional stability during molding processing, and difficult connection, and is not suitable as a material for water supply pressure pipes. However, due to its high health indicators, LDPE, especially LLDPE resin has become a common material for the production of drinking water pipes. LDPE, LLDPE resin melt viscosity is small, good fluidity, easy processing, so the choice of its melt index is also wide, usually MI between 0.3-3g/10min.

Product Introduction
PE pipes are produced by extrusion plasticization using high-density polyethylene, which gradually replaces traditional reinforced concrete pipes and metal pipes.
Product Features
1. Good sanitary performance: PE pipe processing does not add heavy metal salt, the material is non-toxic, no scaling layer, no bacteria, a good solution to the secondary pollution of urban drinking water
2. Good low-temperature impact resistance: The low-temperature embrittlement temperature of polyethylene is extremely low, and it can be used safely in the temperature range of 0 ℃-40 ℃.
3, good stress cracking resistance: with low notch sensitivity, high shear strength and excellent scratch resistance, environmental stress cracking resistance is also very prominent.
4, good chemical resistance: resistance to a variety of chemical medium corrosion, will not rot, rust or electrochemical corrosion phenomenon, will not promote the growth of algae, bacteria or fungi.
5, aging resistance, long service life: black pipes can be stored or used outdoors in the open air, and will not be damaged by ultraviolet radiation.
6. Good wear resistance: The comparative test of wear resistance between PE pipe and steel pipe shows that the wear resistance of PE pipe is 4 times that of steel pipe, which has longer service life and better economy.
7, good flexibility: easy to bend, the project can be bypassed by changing the way of pipe direction, can reduce the amount of pipe fittings and reduce installation costs.
8. Low water flow resistance: It has a smooth inner surface, and its Manning coefficient is 0.009, which has higher conveying capacity, and also reduces the pressure loss of the pipeline and the energy consumption of water delivery.
9, easy to handle: lighter than concrete pipes, galvanized pipes and steel pipes, easy to handle and install, lower manpower and equipment requirements, means that the installation cost of the project is greatly reduced.
10. A variety of new construction methods: with a variety of construction technologies, in addition to the traditional excavation methods for construction, you can also use a variety of new non-excavation technologies such as pipe jacking, directional drilling, lining, pipe cracking and other methods for construction.
Application areas
1, urban water supply; with safety, health, convenient construction and other comprehensive advantages, has become the ideal pipe for urban water supply.
2. Food and chemical industry; it has unique chemical corrosion resistance, can be used for the transportation or discharge of various acid, alkali and salt solutions, with long service life, low cost and maintenance cost.
3, ore, mud transportation; wear resistance is 4 times of steel pipe, can be widely used in conveying ore, power plant fly ash, river dredging mud.
4, replacement of cement pipes, cast iron pipes and steel pipes; For the transformation of old pipes such as cement pipes and cast iron pipes originally laid in the city, PE pipes can be directly inserted into the old pipes for replacement without large-scale excavation. The project cost is low and the construction time is short. It is especially suitable for pipeline transformation in old urban areas.
5, landscaping pipe network; landscaping needs a large number of water pipelines, PE pipeline cost is low, it is worth promoting.
6. Other applications: PE pipeline can also be widely used in other fields, such as electric power, communication sheath, farmland irrigation, siphon drainage, landfill, geothermal air conditioning, deep sea aquaculture, buried fire pipeline, etc.