China's plastic pipeline is developing rapidly and its quality is constantly improving. At present, a plastic pipe industry dominated by polyvinyl chloride (PVC-U) pipe, polyethylene (PE) pipe and polypropylene (PP-R) pipe has been preliminarily formed. Because of its unique advantages, polyethylene (PE) pipe is widely used in building water supply, building drainage, buried drainage pipe, building heating, gas transmission pipe, electrical and telecommunication protection sleeve, industrial pipe, agricultural pipe, etc. It is mainly used in urban water supply, urban gas supply and farmland irrigation.

Edit the nano antibacterial PE tube in this section

◎ nano antibacterial PE pipe nano antibacterial PE pipe is a kind of pipe with antibacterial, sanitary and self-cleaning effects, which is made by adding nano-sized bacterial masterbatch into the inner plastic of the pipe and co extrusion. It is mainly used in urban water supply network, irrigation water diversion project and agricultural sprinkler irrigation project. Because the pipe connection adopts hot-melt and electric fusion connection, the integration of the interface and the pipe is realized, and the vertical stress and axial impact stress caused by internal pressure can be effectively resisted. Moreover, no heavy metal salt stabilizer is added in the production process, the material is non-toxic, does not scale, does not breed bacteria, and avoids the secondary pollution of drinking water. ● product features ◆ good hygiene, self-cleaning and antibacterial, no scaling after long-term use, and solves the secondary pollution of drinking water. ◆ resistant to a variety of chemical media and no electrochemical corrosion. ◆ the inner wall is smooth, the friction coefficient is low, the medium flow capacity is correspondingly high, and has excellent wear resistance. ◆ flexibility, high impact strength, strong shock and distortion resistance. ◆ light weight, convenient transportation and installation. ◆ simple connection process, convenient construction and low comprehensive project cost. ◆ service life: 50 years.

Edit PE pipe classification of this section

1) Polyethylene (PE) pipe for water supply, 2) buried polyethylene pipe for gas, 3) HDPE) silicon core pipe, 4) HDPE cable protective sleeve, 5) high density polyethylene pipe, 6) PE buried cable protective sleeve, 7) PE perforated pipe

Edit the properties of this section of HDPE HDPE pipe

High density polyethylene, English name is "high density polyethylene", referred to as "HDPE". HDPE is a non-polar thermoplastic resin with high crystallinity. The appearance of the original HDPE is milky white and translucent to a certain extent in the thin section. PE has excellent resistance to most domestic and industrial chemicals. Some kinds of chemicals can cause chemical corrosion, such as corrosive oxidants (concentrated nitric acid), aromatic hydrocarbons (xylene) and halogenated hydrocarbons (carbon tetrachloride). The polymer is non hygroscopic and has good water vapor resistance. It can be used for packaging. HDPE has good electrical properties, especially high insulation dielectric strength, which makes it very suitable for wires and cables. Medium to high molecular weight grades have excellent impact resistance, even at room temperature and - 40F low temperature. HDPE is a thermoplastic polyolefin produced by ethylene copolymerization. Although HDPE was introduced in 1956, this plastic has not yet reached the mature level. This general-purpose material is still developing its new uses and markets.

Main characteristics

HDPE is a non-polar thermoplastic resin with high crystallinity. The appearance of the original HDPE is milky white and translucent to a certain extent in the thin section. PE has excellent resistance to most domestic and industrial chemicals. Some kinds of chemicals can cause chemical corrosion, such as corrosive oxidants (concentrated nitric acid), aromatic hydrocarbons (xylene) and halogenated hydrocarbons (carbon tetrachloride). The polymer is non hygroscopic and has good water vapor resistance. It can be used for packaging. HDPE has good electrical properties, especially high insulation dielectric strength, which makes it very suitable for wires and cables. Medium to high molecular weight grades have excellent impact resistance, even at room temperature and - 40F low temperature. The unique characteristics of various grades of HDPE are the appropriate combination of four basic variables: density, molecular weight, molecular weight distribution and additives. Different catalysts are used to produce customized polymers with special properties. These variables are combined to produce HDPE grades for different purposes; Achieve the best balance in performance.

Product performance

HDPE is a non-toxic, tasteless and odorless white particle with a melting point of about 130 ℃ and a relative density of 0.941 ~ 0.960. It has good heat resistance and cold resistance, good chemical stability, high rigidity and toughness and good mechanical strength. Dielectric properties and environmental stress cracking resistance are also good.

Packaging, storage and transportation hnsot

It shall be stored away from fire source and insulated. The warehouse shall be kept dry and tidy. It is strictly prohibited to mix any impurities, sun and rain. The transportation shall be stored in a clean, dry covered carriage or cabin without sharp objects such as nails. It is strictly prohibited to mix with flammable aromatic hydrocarbons, halogenated hydrocarbons and other organic solvents.

recycling

HDPE is the fastest growing part of the plastic recycling market. This is mainly due to its easy reprocessing, minimal degradation characteristics and its extensive application in packaging. The main recycling is to reprocess 25% of the recycled materials, such as post consumer recycling (PCR), with pure HDPE to make bottles that do not come into contact with food. PE pipes for water supply are the replacement products of traditional steel pipes and polyvinyl chloride drinking water pipes.

PE pipe properties:

1. PE gas pipe (1) reliable connection: polyethylene pipe systems are connected by electrothermal fusion, and the strength of the joint is higher than that of the pipe body. ⑵ good low-temperature impact resistance: the low-temperature embrittlement temperature of polyethylene is very low, and it can be used safely in the temperature range of - 60-60 ℃. During construction in winter, pipe embrittlement will not occur due to the good impact resistance of the material. ⑶ good stress cracking resistance: HDPE has low notch sensitivity, high shear strength and excellent scratch resistance, and its environmental stress cracking resistance is also very outstanding. (4) good chemical corrosion resistance: HDPE pipeline can resist the corrosion of a variety of chemical media, and the chemicals in the soil will not cause any degradation to the pipeline. Polyethylene is an electrical insulator, so it will not rot, rust or electrochemical corrosion; In addition, it does not promote the growth of algae, bacteria or fungi. (5) aging resistance and long service life: polyethylene pipes containing 2-2.5% uniformly distributed carbon black can be stored outdoors or used for 50 years without being damaged by ultraviolet radiation. (6) good wear resistance: the comparative test of wear resistance between HDPE pipe and steel pipe shows that the wear resistance of HDPE pipe is 4 times that of steel pipe. In the field of mud transportation, compared with steel pipe, HDPE pipe has better wear resistance, which means that HDPE pipe has longer service life and better economy. (7) good flexibility: the flexibility of HDPE pipeline makes it easy to bend. In engineering, obstacles can be bypassed by changing the pipeline direction. In many cases, the flexibility of pipeline can reduce the consumption of pipe fittings and reduce the installation cost. (8) convenient handling: HDPE pipe is lighter than concrete pipe, galvanized pipe and steel pipe. It is easy to handle and install. The lower labor and equipment requirements mean that the installation cost of the project is greatly reduced. (9) a variety of new construction methods: HDPE pipeline has a variety of construction technologies. In addition to the traditional excavation method, it can also use a variety of new non excavation technologies, such as pipe jacking, directional drilling, lining, pipe cracking and so on. This is the only choice for some places where excavation is not allowed. Therefore, HDPE pipeline is more widely used. 2. PE water supply pipe characteristics: 1. Long service life: under normal conditions, the minimum service life is 50 years. 2. Good sanitation: PE pipe is non-toxic, does not contain heavy metal additives, does not scale, does not breed bacteria, and solves the problem of secondary pollution of drinking water. Comply with GB / t17219 safety evaluation standard and relevant health and safety evaluation regulations of the Ministry of health. 3. It can resist the corrosion of a variety of chemical media: no electrochemical corrosion. 4. The inner wall is smooth, the friction coefficient is very low, the passing capacity of the medium is correspondingly improved, and has excellent wear resistance. 5. Good flexibility, high impact strength, strong shock and distortion resistance. 6. Light weight, convenient transportation and installation. 7. The unique electric fusion connection, hot-melt butt joint and hot-melt socket connection technology make the interface with the pipe body with high strength and ensure the safety and reliability of the interface. 8. The welding process is simple, the construction is convenient, and the comprehensive cost of the project is low. 9. PE environmental protection and health water supply pipes DN20 ~ dn90 are blue, and above dn110 are blue or black with blue line. Other colors need to be customized, and the color of accessories corresponds to the color of pipes. 10. Small flow resistance: HDPE pipe has smooth inner surface, and its Manning coefficient is 0.009. The smooth performance and non adhesion characteristics ensure that HDPE pipeline has higher transportation capacity than traditional pipes, and also reduce the pressure loss and water transmission energy consumption of the pipeline.